Home / 20,607.56-28,439.85-11,655.11

Finding the Fourth Proportional to 20,607.56, 28,439.85 and 11,655.11

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Solution

The fourth proportional to 20,607.56, 28,439.85 and 11,655.11 is: 16,084.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,607.56 : 28,439.85 = 11,655.11 : x
  2. Step 2: Convert to fraction form
    20,607.56/28,439.85 = 11,655.11/x
  3. Step 3: Cross multiply
    20,607.56x = 28,439.85 × 11,655.11
  4. Step 4: Simplify right side
    20,607.56x = 331,469,580.13
  5. Step 5: Solve for x
    x = 331,469,580.13/20,607.56
  6. Step 6: Final answer
    x = 16,084.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.