Home / 40,388.13-60,591.78-12,686.13

Finding the Fourth Proportional to 40,388.13, 60,591.78 and 12,686.13

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Solution

The fourth proportional to 40,388.13, 60,591.78 and 12,686.13 is: 19,032.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,388.13 : 60,591.78 = 12,686.13 : x
  2. Step 2: Convert to fraction form
    40,388.13/60,591.78 = 12,686.13/x
  3. Step 3: Cross multiply
    40,388.13x = 60,591.78 × 12,686.13
  4. Step 4: Simplify right side
    40,388.13x = 768,675,198.01
  5. Step 5: Solve for x
    x = 768,675,198.01/40,388.13
  6. Step 6: Final answer
    x = 19,032.21

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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.