Home / 13,655.52-20,489.36-11,902.28

Finding the Fourth Proportional to 13,655.52, 20,489.36 and 11,902.28

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Solution

The fourth proportional to 13,655.52, 20,489.36 and 11,902.28 is: 17,858.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.52 : 20,489.36 = 11,902.28 : x
  2. Step 2: Convert to fraction form
    13,655.52/20,489.36 = 11,902.28/x
  3. Step 3: Cross multiply
    13,655.52x = 20,489.36 × 11,902.28
  4. Step 4: Simplify right side
    13,655.52x = 243,869,937.78
  5. Step 5: Solve for x
    x = 243,869,937.78/13,655.52
  6. Step 6: Final answer
    x = 17,858.71

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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.