Home / 16,051.92-22,151.79-8,979

Finding the Fourth Proportional to 16,051.92, 22,151.79 and 8,979

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Solution

The fourth proportional to 16,051.92, 22,151.79 and 8,979 is: 12,391.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,051.92 : 22,151.79 = 8,979 : x
  2. Step 2: Convert to fraction form
    16,051.92/22,151.79 = 8,979/x
  3. Step 3: Cross multiply
    16,051.92x = 22,151.79 × 8,979
  4. Step 4: Simplify right side
    16,051.92x = 198,900,922.41
  5. Step 5: Solve for x
    x = 198,900,922.41/16,051.92
  6. Step 6: Final answer
    x = 12,391.10

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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.