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Finding the Fourth Proportional to 36,221.68, 54,326.68 and 9,920.28

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Solution

The fourth proportional to 36,221.68, 54,326.68 and 9,920.28 is: 14,878.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,221.68 : 54,326.68 = 9,920.28 : x
  2. Step 2: Convert to fraction form
    36,221.68/54,326.68 = 9,920.28/x
  3. Step 3: Cross multiply
    36,221.68x = 54,326.68 × 9,920.28
  4. Step 4: Simplify right side
    36,221.68x = 538,935,877.07
  5. Step 5: Solve for x
    x = 538,935,877.07/36,221.68
  6. Step 6: Final answer
    x = 14,878.82

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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.