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Finding the Fourth Proportional to 14,815.31, 20,437.05 and 9,510.92

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Solution

The fourth proportional to 14,815.31, 20,437.05 and 9,510.92 is: 13,119.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,815.31 : 20,437.05 = 9,510.92 : x
  2. Step 2: Convert to fraction form
    14,815.31/20,437.05 = 9,510.92/x
  3. Step 3: Cross multiply
    14,815.31x = 20,437.05 × 9,510.92
  4. Step 4: Simplify right side
    14,815.31x = 194,375,157.71
  5. Step 5: Solve for x
    x = 194,375,157.71/14,815.31
  6. Step 6: Final answer
    x = 13,119.89

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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.