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Finding the Fourth Proportional to 15,092.30, 20,837.58 and 9,129.08

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Solution

The fourth proportional to 15,092.30, 20,837.58 and 9,129.08 is: 12,604.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,092.30 : 20,837.58 = 9,129.08 : x
  2. Step 2: Convert to fraction form
    15,092.30/20,837.58 = 9,129.08/x
  3. Step 3: Cross multiply
    15,092.30x = 20,837.58 × 9,129.08
  4. Step 4: Simplify right side
    15,092.30x = 190,227,934.83
  5. Step 5: Solve for x
    x = 190,227,934.83/15,092.30
  6. Step 6: Final answer
    x = 12,604.30

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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.