Home / 20,937.55-28,893.49-11,505.91

Finding the Fourth Proportional to 20,937.55, 28,893.49 and 11,505.91

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Solution

The fourth proportional to 20,937.55, 28,893.49 and 11,505.91 is: 15,877.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.55 : 28,893.49 = 11,505.91 : x
  2. Step 2: Convert to fraction form
    20,937.55/28,893.49 = 11,505.91/x
  3. Step 3: Cross multiply
    20,937.55x = 28,893.49 × 11,505.91
  4. Step 4: Simplify right side
    20,937.55x = 332,445,895.53
  5. Step 5: Solve for x
    x = 332,445,895.53/20,937.55
  6. Step 6: Final answer
    x = 15,877.98

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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.