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Finding the Fourth Proportional to 38,515.70, 57,773.55 and 21,869.30

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Solution

The fourth proportional to 38,515.70, 57,773.55 and 21,869.30 is: 32,803.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,515.70 : 57,773.55 = 21,869.30 : x
  2. Step 2: Convert to fraction form
    38,515.70/57,773.55 = 21,869.30/x
  3. Step 3: Cross multiply
    38,515.70x = 57,773.55 × 21,869.30
  4. Step 4: Simplify right side
    38,515.70x = 1,263,467,097.02
  5. Step 5: Solve for x
    x = 1,263,467,097.02/38,515.70
  6. Step 6: Final answer
    x = 32,803.95

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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.