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Finding the Fourth Proportional to 29,350.35, 40,503.11 and 15,921.23

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Solution

The fourth proportional to 29,350.35, 40,503.11 and 15,921.23 is: 21,971.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,350.35 : 40,503.11 = 15,921.23 : x
  2. Step 2: Convert to fraction form
    29,350.35/40,503.11 = 15,921.23/x
  3. Step 3: Cross multiply
    29,350.35x = 40,503.11 × 15,921.23
  4. Step 4: Simplify right side
    29,350.35x = 644,859,047.90
  5. Step 5: Solve for x
    x = 644,859,047.90/29,350.35
  6. Step 6: Final answer
    x = 21,971.09

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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.