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Finding the Fourth Proportional to 36,022.40, 54,042.02 and 12,330.20

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Solution

The fourth proportional to 36,022.40, 54,042.02 and 12,330.20 is: 18,498.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,022.40 : 54,042.02 = 12,330.20 : x
  2. Step 2: Convert to fraction form
    36,022.40/54,042.02 = 12,330.20/x
  3. Step 3: Cross multiply
    36,022.40x = 54,042.02 × 12,330.20
  4. Step 4: Simplify right side
    36,022.40x = 666,348,934.72
  5. Step 5: Solve for x
    x = 666,348,934.72/36,022.40
  6. Step 6: Final answer
    x = 18,498.18

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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.