Home / 13,487.14-20,083.77-13,339.75

Finding the Fourth Proportional to 13,487.14, 20,083.77 and 13,339.75

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Solution

The fourth proportional to 13,487.14, 20,083.77 and 13,339.75 is: 19,864.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.14 : 20,083.77 = 13,339.75 : x
  2. Step 2: Convert to fraction form
    13,487.14/20,083.77 = 13,339.75/x
  3. Step 3: Cross multiply
    13,487.14x = 20,083.77 × 13,339.75
  4. Step 4: Simplify right side
    13,487.14x = 267,912,470.86
  5. Step 5: Solve for x
    x = 267,912,470.86/13,487.14
  6. Step 6: Final answer
    x = 19,864.29

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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.