Home / 15,419.36-21,279.68-8,702.54

Finding the Fourth Proportional to 15,419.36, 21,279.68 and 8,702.54

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Solution

The fourth proportional to 15,419.36, 21,279.68 and 8,702.54 is: 12,010.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,419.36 : 21,279.68 = 8,702.54 : x
  2. Step 2: Convert to fraction form
    15,419.36/21,279.68 = 8,702.54/x
  3. Step 3: Cross multiply
    15,419.36x = 21,279.68 × 8,702.54
  4. Step 4: Simplify right side
    15,419.36x = 185,187,116.48
  5. Step 5: Solve for x
    x = 185,187,116.48/15,419.36
  6. Step 6: Final answer
    x = 12,010.04

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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.