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Finding the Fourth Proportional to 18,264.20, 27,407.10 and 12,042.20

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Solution

The fourth proportional to 18,264.20, 27,407.10 and 12,042.20 is: 18,070.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,264.20 : 27,407.10 = 12,042.20 : x
  2. Step 2: Convert to fraction form
    18,264.20/27,407.10 = 12,042.20/x
  3. Step 3: Cross multiply
    18,264.20x = 27,407.10 × 12,042.20
  4. Step 4: Simplify right side
    18,264.20x = 330,041,779.62
  5. Step 5: Solve for x
    x = 330,041,779.62/18,264.20
  6. Step 6: Final answer
    x = 18,070.42

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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.