Home / 38,145.50-52,644.03-21,381.74

Finding the Fourth Proportional to 38,145.50, 52,644.03 and 21,381.74

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Solution

The fourth proportional to 38,145.50, 52,644.03 and 21,381.74 is: 29,508.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,145.50 : 52,644.03 = 21,381.74 : x
  2. Step 2: Convert to fraction form
    38,145.50/52,644.03 = 21,381.74/x
  3. Step 3: Cross multiply
    38,145.50x = 52,644.03 × 21,381.74
  4. Step 4: Simplify right side
    38,145.50x = 1,125,620,962.01
  5. Step 5: Solve for x
    x = 1,125,620,962.01/38,145.50
  6. Step 6: Final answer
    x = 29,508.62

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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.