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Finding the Fourth Proportional to 29,260, 40,378.78 and 16,515.87

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Solution

The fourth proportional to 29,260, 40,378.78 and 16,515.87 is: 22,791.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,260 : 40,378.78 = 16,515.87 : x
  2. Step 2: Convert to fraction form
    29,260/40,378.78 = 16,515.87/x
  3. Step 3: Cross multiply
    29,260x = 40,378.78 × 16,515.87
  4. Step 4: Simplify right side
    29,260x = 666,890,396.77
  5. Step 5: Solve for x
    x = 666,890,396.77/29,260
  6. Step 6: Final answer
    x = 22,791.88

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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.