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Finding the Fourth Proportional to 15,029.32, 20,731.41 and 9,924.88

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Solution

The fourth proportional to 15,029.32, 20,731.41 and 9,924.88 is: 13,690.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,029.32 : 20,731.41 = 9,924.88 : x
  2. Step 2: Convert to fraction form
    15,029.32/20,731.41 = 9,924.88/x
  3. Step 3: Cross multiply
    15,029.32x = 20,731.41 × 9,924.88
  4. Step 4: Simplify right side
    15,029.32x = 205,756,764.46
  5. Step 5: Solve for x
    x = 205,756,764.46/15,029.32
  6. Step 6: Final answer
    x = 13,690.36

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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.