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Finding the Fourth Proportional to 30,672.65, 42,349.24 and 23,489.89

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Solution

The fourth proportional to 30,672.65, 42,349.24 and 23,489.89 is: 32,432.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,672.65 : 42,349.24 = 23,489.89 : x
  2. Step 2: Convert to fraction form
    30,672.65/42,349.24 = 23,489.89/x
  3. Step 3: Cross multiply
    30,672.65x = 42,349.24 × 23,489.89
  4. Step 4: Simplify right side
    30,672.65x = 994,778,989.18
  5. Step 5: Solve for x
    x = 994,778,989.18/30,672.65
  6. Step 6: Final answer
    x = 32,432.12

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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.