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Finding the Fourth Proportional to 29,635.66, 40,908.54 and 18,307

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Solution

The fourth proportional to 29,635.66, 40,908.54 and 18,307 is: 25,270.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,635.66 : 40,908.54 = 18,307 : x
  2. Step 2: Convert to fraction form
    29,635.66/40,908.54 = 18,307/x
  3. Step 3: Cross multiply
    29,635.66x = 40,908.54 × 18,307
  4. Step 4: Simplify right side
    29,635.66x = 748,912,641.78
  5. Step 5: Solve for x
    x = 748,912,641.78/29,635.66
  6. Step 6: Final answer
    x = 25,270.66

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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.