Home / 21,156.96-29,197.56-11,724.92

Finding the Fourth Proportional to 21,156.96, 29,197.56 and 11,724.92

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Solution

The fourth proportional to 21,156.96, 29,197.56 and 11,724.92 is: 16,180.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156.96 : 29,197.56 = 11,724.92 : x
  2. Step 2: Convert to fraction form
    21,156.96/29,197.56 = 11,724.92/x
  3. Step 3: Cross multiply
    21,156.96x = 29,197.56 × 11,724.92
  4. Step 4: Simplify right side
    21,156.96x = 342,338,909.21
  5. Step 5: Solve for x
    x = 342,338,909.21/21,156.96
  6. Step 6: Final answer
    x = 16,180.91

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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.