Home / 15,118.57-20,863.26-8,404.13

Finding the Fourth Proportional to 15,118.57, 20,863.26 and 8,404.13

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Solution

The fourth proportional to 15,118.57, 20,863.26 and 8,404.13 is: 11,597.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,118.57 : 20,863.26 = 8,404.13 : x
  2. Step 2: Convert to fraction form
    15,118.57/20,863.26 = 8,404.13/x
  3. Step 3: Cross multiply
    15,118.57x = 20,863.26 × 8,404.13
  4. Step 4: Simplify right side
    15,118.57x = 175,337,549.26
  5. Step 5: Solve for x
    x = 175,337,549.26/15,118.57
  6. Step 6: Final answer
    x = 11,597.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.