Home / 20,573.55-28,391.61-11,142.12

Finding the Fourth Proportional to 20,573.55, 28,391.61 and 11,142.12

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Solution

The fourth proportional to 20,573.55, 28,391.61 and 11,142.12 is: 15,376.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,573.55 : 28,391.61 = 11,142.12 : x
  2. Step 2: Convert to fraction form
    20,573.55/28,391.61 = 11,142.12/x
  3. Step 3: Cross multiply
    20,573.55x = 28,391.61 × 11,142.12
  4. Step 4: Simplify right side
    20,573.55x = 316,342,725.61
  5. Step 5: Solve for x
    x = 316,342,725.61/20,573.55
  6. Step 6: Final answer
    x = 15,376.19

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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.