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Finding the Fourth Proportional to 43,592, 65,397.72 and 15,890

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Solution

The fourth proportional to 43,592, 65,397.72 and 15,890 is: 23,838.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,592 : 65,397.72 = 15,890 : x
  2. Step 2: Convert to fraction form
    43,592/65,397.72 = 15,890/x
  3. Step 3: Cross multiply
    43,592x = 65,397.72 × 15,890
  4. Step 4: Simplify right side
    43,592x = 1,039,169,770.80
  5. Step 5: Solve for x
    x = 1,039,169,770.80/43,592
  6. Step 6: Final answer
    x = 23,838.54

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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.