Home / 40,139.90-60,216.81-13,488.49

Finding the Fourth Proportional to 40,139.90, 60,216.81 and 13,488.49

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Solution

The fourth proportional to 40,139.90, 60,216.81 and 13,488.49 is: 20,235.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,139.90 : 60,216.81 = 13,488.49 : x
  2. Step 2: Convert to fraction form
    40,139.90/60,216.81 = 13,488.49/x
  3. Step 3: Cross multiply
    40,139.90x = 60,216.81 × 13,488.49
  4. Step 4: Simplify right side
    40,139.90x = 812,233,839.52
  5. Step 5: Solve for x
    x = 812,233,839.52/40,139.90
  6. Step 6: Final answer
    x = 20,235.07

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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.