Home / 21,505.76-29,677.20-12,553.52

Finding the Fourth Proportional to 21,505.76, 29,677.20 and 12,553.52

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Solution

The fourth proportional to 21,505.76, 29,677.20 and 12,553.52 is: 17,323.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,505.76 : 29,677.20 = 12,553.52 : x
  2. Step 2: Convert to fraction form
    21,505.76/29,677.20 = 12,553.52/x
  3. Step 3: Cross multiply
    21,505.76x = 29,677.20 × 12,553.52
  4. Step 4: Simplify right side
    21,505.76x = 372,553,323.74
  5. Step 5: Solve for x
    x = 372,553,323.74/21,505.76
  6. Step 6: Final answer
    x = 17,323.42

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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.