Home / 13,753.08-18,972-8,708.40

Finding the Fourth Proportional to 13,753.08, 18,972 and 8,708.40

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Solution

The fourth proportional to 13,753.08, 18,972 and 8,708.40 is: 12,013.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,753.08 : 18,972 = 8,708.40 : x
  2. Step 2: Convert to fraction form
    13,753.08/18,972 = 8,708.40/x
  3. Step 3: Cross multiply
    13,753.08x = 18,972 × 8,708.40
  4. Step 4: Simplify right side
    13,753.08x = 165,215,764.80
  5. Step 5: Solve for x
    x = 165,215,764.80/13,753.08
  6. Step 6: Final answer
    x = 12,013.00

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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.