Home / 13,451.90-18,572.76-8,418.15

Finding the Fourth Proportional to 13,451.90, 18,572.76 and 8,418.15

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Solution

The fourth proportional to 13,451.90, 18,572.76 and 8,418.15 is: 11,622.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.90 : 18,572.76 = 8,418.15 : x
  2. Step 2: Convert to fraction form
    13,451.90/18,572.76 = 8,418.15/x
  3. Step 3: Cross multiply
    13,451.90x = 18,572.76 × 8,418.15
  4. Step 4: Simplify right side
    13,451.90x = 156,348,279.59
  5. Step 5: Solve for x
    x = 156,348,279.59/13,451.90
  6. Step 6: Final answer
    x = 11,622.77

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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.