Home / 15,997.79-22,078.53-11,957.61

Finding the Fourth Proportional to 15,997.79, 22,078.53 and 11,957.61

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Solution

The fourth proportional to 15,997.79, 22,078.53 and 11,957.61 is: 16,502.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,997.79 : 22,078.53 = 11,957.61 : x
  2. Step 2: Convert to fraction form
    15,997.79/22,078.53 = 11,957.61/x
  3. Step 3: Cross multiply
    15,997.79x = 22,078.53 × 11,957.61
  4. Step 4: Simplify right side
    15,997.79x = 264,006,451.11
  5. Step 5: Solve for x
    x = 264,006,451.11/15,997.79
  6. Step 6: Final answer
    x = 16,502.68

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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.