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Finding the Fourth Proportional to 29,295.50, 40,429.95 and 18,119.66

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Solution

The fourth proportional to 29,295.50, 40,429.95 and 18,119.66 is: 25,006.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,295.50 : 40,429.95 = 18,119.66 : x
  2. Step 2: Convert to fraction form
    29,295.50/40,429.95 = 18,119.66/x
  3. Step 3: Cross multiply
    29,295.50x = 40,429.95 × 18,119.66
  4. Step 4: Simplify right side
    29,295.50x = 732,576,947.82
  5. Step 5: Solve for x
    x = 732,576,947.82/29,295.50
  6. Step 6: Final answer
    x = 25,006.47

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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.