Home / 13,417.31-20,134.15-8,480.15

Finding the Fourth Proportional to 13,417.31, 20,134.15 and 8,480.15

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Solution

The fourth proportional to 13,417.31, 20,134.15 and 8,480.15 is: 12,725.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,417.31 : 20,134.15 = 8,480.15 : x
  2. Step 2: Convert to fraction form
    13,417.31/20,134.15 = 8,480.15/x
  3. Step 3: Cross multiply
    13,417.31x = 20,134.15 × 8,480.15
  4. Step 4: Simplify right side
    13,417.31x = 170,740,490.25
  5. Step 5: Solve for x
    x = 170,740,490.25/13,417.31
  6. Step 6: Final answer
    x = 12,725.39

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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.