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Finding the Fourth Proportional to 15,992.92, 22,070.10 and 8,918.92

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Solution

The fourth proportional to 15,992.92, 22,070.10 and 8,918.92 is: 12,308.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,992.92 : 22,070.10 = 8,918.92 : x
  2. Step 2: Convert to fraction form
    15,992.92/22,070.10 = 8,918.92/x
  3. Step 3: Cross multiply
    15,992.92x = 22,070.10 × 8,918.92
  4. Step 4: Simplify right side
    15,992.92x = 196,841,456.29
  5. Step 5: Solve for x
    x = 196,841,456.29/15,992.92
  6. Step 6: Final answer
    x = 12,308.04

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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.