Home / 13,132.73-18,116.14-8,878.20

Finding the Fourth Proportional to 13,132.73, 18,116.14 and 8,878.20

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Solution

The fourth proportional to 13,132.73, 18,116.14 and 8,878.20 is: 12,247.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,132.73 : 18,116.14 = 8,878.20 : x
  2. Step 2: Convert to fraction form
    13,132.73/18,116.14 = 8,878.20/x
  3. Step 3: Cross multiply
    13,132.73x = 18,116.14 × 8,878.20
  4. Step 4: Simplify right side
    13,132.73x = 160,838,714.15
  5. Step 5: Solve for x
    x = 160,838,714.15/13,132.73
  6. Step 6: Final answer
    x = 12,247.17

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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.