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Finding the Fourth Proportional to 28,992.92, 40,009.11 and 16,417.70

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Solution

The fourth proportional to 28,992.92, 40,009.11 and 16,417.70 is: 22,655.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,992.92 : 40,009.11 = 16,417.70 : x
  2. Step 2: Convert to fraction form
    28,992.92/40,009.11 = 16,417.70/x
  3. Step 3: Cross multiply
    28,992.92x = 40,009.11 × 16,417.70
  4. Step 4: Simplify right side
    28,992.92x = 656,857,565.25
  5. Step 5: Solve for x
    x = 656,857,565.25/28,992.92
  6. Step 6: Final answer
    x = 22,655.79

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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.