Home / 20,173.60-30,261.30-7,699.60

Finding the Fourth Proportional to 20,173.60, 30,261.30 and 7,699.60

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Solution

The fourth proportional to 20,173.60, 30,261.30 and 7,699.60 is: 11,549.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,173.60 : 30,261.30 = 7,699.60 : x
  2. Step 2: Convert to fraction form
    20,173.60/30,261.30 = 7,699.60/x
  3. Step 3: Cross multiply
    20,173.60x = 30,261.30 × 7,699.60
  4. Step 4: Simplify right side
    20,173.60x = 232,999,905.48
  5. Step 5: Solve for x
    x = 232,999,905.48/20,173.60
  6. Step 6: Final answer
    x = 11,549.74

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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.