Home / 13,110.48-18,079.88-8,862.16

Finding the Fourth Proportional to 13,110.48, 18,079.88 and 8,862.16

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Solution

The fourth proportional to 13,110.48, 18,079.88 and 8,862.16 is: 12,221.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.48 : 18,079.88 = 8,862.16 : x
  2. Step 2: Convert to fraction form
    13,110.48/18,079.88 = 8,862.16/x
  3. Step 3: Cross multiply
    13,110.48x = 18,079.88 × 8,862.16
  4. Step 4: Simplify right side
    13,110.48x = 160,226,789.34
  5. Step 5: Solve for x
    x = 160,226,789.34/13,110.48
  6. Step 6: Final answer
    x = 12,221.28

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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.