Home / 15,139.85-22,612.87-13,712.95

Finding the Fourth Proportional to 15,139.85, 22,612.87 and 13,712.95

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Solution

The fourth proportional to 15,139.85, 22,612.87 and 13,712.95 is: 20,481.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.85 : 22,612.87 = 13,712.95 : x
  2. Step 2: Convert to fraction form
    15,139.85/22,612.87 = 13,712.95/x
  3. Step 3: Cross multiply
    15,139.85x = 22,612.87 × 13,712.95
  4. Step 4: Simplify right side
    15,139.85x = 310,089,201.07
  5. Step 5: Solve for x
    x = 310,089,201.07/15,139.85
  6. Step 6: Final answer
    x = 20,481.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.