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Finding the Fourth Proportional to 18,055.20, 27,098.80 and 10,650.40

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Solution

The fourth proportional to 18,055.20, 27,098.80 and 10,650.40 is: 15,985.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,055.20 : 27,098.80 = 10,650.40 : x
  2. Step 2: Convert to fraction form
    18,055.20/27,098.80 = 10,650.40/x
  3. Step 3: Cross multiply
    18,055.20x = 27,098.80 × 10,650.40
  4. Step 4: Simplify right side
    18,055.20x = 288,613,059.52
  5. Step 5: Solve for x
    x = 288,613,059.52/18,055.20
  6. Step 6: Final answer
    x = 15,985.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.