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Finding the Fourth Proportional to 38,154, 52,652.88 and 21,387.36

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Solution

The fourth proportional to 38,154, 52,652.88 and 21,387.36 is: 29,514.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,154 : 52,652.88 = 21,387.36 : x
  2. Step 2: Convert to fraction form
    38,154/52,652.88 = 21,387.36/x
  3. Step 3: Cross multiply
    38,154x = 52,652.88 × 21,387.36
  4. Step 4: Simplify right side
    38,154x = 1,126,106,099.60
  5. Step 5: Solve for x
    x = 1,126,106,099.60/38,154
  6. Step 6: Final answer
    x = 29,514.76

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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.