Home / 20,190,548.70-30,285,823.05-7,420,218.30

Finding the Fourth Proportional to 20,190,548.70, 30,285,823.05 and 7,420,218.30

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Solution

The fourth proportional to 20,190,548.70, 30,285,823.05 and 7,420,218.30 is: 11,130,327.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190,548.70 : 30,285,823.05 = 7,420,218.30 : x
  2. Step 2: Convert to fraction form
    20,190,548.70/30,285,823.05 = 7,420,218.30/x
  3. Step 3: Cross multiply
    20,190,548.70x = 30,285,823.05 × 7,420,218.30
  4. Step 4: Simplify right side
    20,190,548.70x = 224,727,418,426,171.81
  5. Step 5: Solve for x
    x = 224,727,418,426,171.81/20,190,548.70
  6. Step 6: Final answer
    x = 11,130,327.45

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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.