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Finding the Fourth Proportional to 40,479.26, 60,722.93 and 12,398.99

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Solution

The fourth proportional to 40,479.26, 60,722.93 and 12,398.99 is: 18,599.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,479.26 : 60,722.93 = 12,398.99 : x
  2. Step 2: Convert to fraction form
    40,479.26/60,722.93 = 12,398.99/x
  3. Step 3: Cross multiply
    40,479.26x = 60,722.93 × 12,398.99
  4. Step 4: Simplify right side
    40,479.26x = 752,902,729.22
  5. Step 5: Solve for x
    x = 752,902,729.22/40,479.26
  6. Step 6: Final answer
    x = 18,599.72

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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.