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Finding the Fourth Proportional to 37,884.70, 52,278.78 and 21,117.70

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Solution

The fourth proportional to 37,884.70, 52,278.78 and 21,117.70 is: 29,141.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,884.70 : 52,278.78 = 21,117.70 : x
  2. Step 2: Convert to fraction form
    37,884.70/52,278.78 = 21,117.70/x
  3. Step 3: Cross multiply
    37,884.70x = 52,278.78 × 21,117.70
  4. Step 4: Simplify right side
    37,884.70x = 1,104,007,592.41
  5. Step 5: Solve for x
    x = 1,104,007,592.41/37,884.70
  6. Step 6: Final answer
    x = 29,141.25

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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.