Home / 20,332.79-28,059.38-11,381.12

Finding the Fourth Proportional to 20,332.79, 28,059.38 and 11,381.12

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Solution

The fourth proportional to 20,332.79, 28,059.38 and 11,381.12 is: 15,706.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.79 : 28,059.38 = 11,381.12 : x
  2. Step 2: Convert to fraction form
    20,332.79/28,059.38 = 11,381.12/x
  3. Step 3: Cross multiply
    20,332.79x = 28,059.38 × 11,381.12
  4. Step 4: Simplify right side
    20,332.79x = 319,347,059.06
  5. Step 5: Solve for x
    x = 319,347,059.06/20,332.79
  6. Step 6: Final answer
    x = 15,706.02

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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.