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Finding the Fourth Proportional to 16,458.72, 22,712.87 and 8,904.89

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Solution

The fourth proportional to 16,458.72, 22,712.87 and 8,904.89 is: 12,288.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,458.72 : 22,712.87 = 8,904.89 : x
  2. Step 2: Convert to fraction form
    16,458.72/22,712.87 = 8,904.89/x
  3. Step 3: Cross multiply
    16,458.72x = 22,712.87 × 8,904.89
  4. Step 4: Simplify right side
    16,458.72x = 202,255,450.85
  5. Step 5: Solve for x
    x = 202,255,450.85/16,458.72
  6. Step 6: Final answer
    x = 12,288.65

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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.