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Finding the Fourth Proportional to 15,812.70, 23,693.13 and 12,339.42

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Solution

The fourth proportional to 15,812.70, 23,693.13 and 12,339.42 is: 18,488.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,812.70 : 23,693.13 = 12,339.42 : x
  2. Step 2: Convert to fraction form
    15,812.70/23,693.13 = 12,339.42/x
  3. Step 3: Cross multiply
    15,812.70x = 23,693.13 × 12,339.42
  4. Step 4: Simplify right side
    15,812.70x = 292,359,482.18
  5. Step 5: Solve for x
    x = 292,359,482.18/15,812.70
  6. Step 6: Final answer
    x = 18,488.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.