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Finding the Fourth Proportional to 38,575, 53,230.98 and 21,576.29

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Solution

The fourth proportional to 38,575, 53,230.98 and 21,576.29 is: 29,773.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,575 : 53,230.98 = 21,576.29 : x
  2. Step 2: Convert to fraction form
    38,575/53,230.98 = 21,576.29/x
  3. Step 3: Cross multiply
    38,575x = 53,230.98 × 21,576.29
  4. Step 4: Simplify right side
    38,575x = 1,148,527,061.46
  5. Step 5: Solve for x
    x = 1,148,527,061.46/38,575
  6. Step 6: Final answer
    x = 29,773.87

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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.