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Finding the Fourth Proportional to 37,921.50, 52,331.94 and 21,154.50

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Solution

The fourth proportional to 37,921.50, 52,331.94 and 21,154.50 is: 29,193.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,921.50 : 52,331.94 = 21,154.50 : x
  2. Step 2: Convert to fraction form
    37,921.50/52,331.94 = 21,154.50/x
  3. Step 3: Cross multiply
    37,921.50x = 52,331.94 × 21,154.50
  4. Step 4: Simplify right side
    37,921.50x = 1,107,056,024.73
  5. Step 5: Solve for x
    x = 1,107,056,024.73/37,921.50
  6. Step 6: Final answer
    x = 29,193.36

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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.