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Finding the Fourth Proportional to 40,292.59, 60,438.87 and 12,590.59

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Solution

The fourth proportional to 40,292.59, 60,438.87 and 12,590.59 is: 18,885.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,292.59 : 60,438.87 = 12,590.59 : x
  2. Step 2: Convert to fraction form
    40,292.59/60,438.87 = 12,590.59/x
  3. Step 3: Cross multiply
    40,292.59x = 60,438.87 × 12,590.59
  4. Step 4: Simplify right side
    40,292.59x = 760,960,881.14
  5. Step 5: Solve for x
    x = 760,960,881.14/40,292.59
  6. Step 6: Final answer
    x = 18,885.88

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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.