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Finding the Fourth Proportional to 38,505.70, 57,715.35 and 21,873.70

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Solution

The fourth proportional to 38,505.70, 57,715.35 and 21,873.70 is: 32,786.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,505.70 : 57,715.35 = 21,873.70 : x
  2. Step 2: Convert to fraction form
    38,505.70/57,715.35 = 21,873.70/x
  3. Step 3: Cross multiply
    38,505.70x = 57,715.35 × 21,873.70
  4. Step 4: Simplify right side
    38,505.70x = 1,262,448,251.30
  5. Step 5: Solve for x
    x = 1,262,448,251.30/38,505.70
  6. Step 6: Final answer
    x = 32,786.01

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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.