Home / 40,138.90-60,215.31-13,487.49

Finding the Fourth Proportional to 40,138.90, 60,215.31 and 13,487.49

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Solution

The fourth proportional to 40,138.90, 60,215.31 and 13,487.49 is: 20,233.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,138.90 : 60,215.31 = 13,487.49 : x
  2. Step 2: Convert to fraction form
    40,138.90/60,215.31 = 13,487.49/x
  3. Step 3: Cross multiply
    40,138.90x = 60,215.31 × 13,487.49
  4. Step 4: Simplify right side
    40,138.90x = 812,153,324.03
  5. Step 5: Solve for x
    x = 812,153,324.03/40,138.90
  6. Step 6: Final answer
    x = 20,233.57

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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.