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Finding the Fourth Proportional to 38,352.78, 52,926.21 and 21,585.78

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Solution

The fourth proportional to 38,352.78, 52,926.21 and 21,585.78 is: 29,788.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,352.78 : 52,926.21 = 21,585.78 : x
  2. Step 2: Convert to fraction form
    38,352.78/52,926.21 = 21,585.78/x
  3. Step 3: Cross multiply
    38,352.78x = 52,926.21 × 21,585.78
  4. Step 4: Simplify right side
    38,352.78x = 1,142,453,525.29
  5. Step 5: Solve for x
    x = 1,142,453,525.29/38,352.78
  6. Step 6: Final answer
    x = 29,788.02

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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.