Home / 20,222,681.10-30,334,021.65-13,420,236.30

Finding the Fourth Proportional to 20,222,681.10, 30,334,021.65 and 13,420,236.30

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Solution

The fourth proportional to 20,222,681.10, 30,334,021.65 and 13,420,236.30 is: 20,130,354.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,222,681.10 : 30,334,021.65 = 13,420,236.30 : x
  2. Step 2: Convert to fraction form
    20,222,681.10/30,334,021.65 = 13,420,236.30/x
  3. Step 3: Cross multiply
    20,222,681.10x = 30,334,021.65 × 13,420,236.30
  4. Step 4: Simplify right side
    20,222,681.10x = 407,089,738,472,315.88
  5. Step 5: Solve for x
    x = 407,089,738,472,315.88/20,222,681.10
  6. Step 6: Final answer
    x = 20,130,354.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.