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Finding the Fourth Proportional to 29,300.52, 40,396.64 and 18,671.70

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Solution

The fourth proportional to 29,300.52, 40,396.64 and 18,671.70 is: 25,742.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,300.52 : 40,396.64 = 18,671.70 : x
  2. Step 2: Convert to fraction form
    29,300.52/40,396.64 = 18,671.70/x
  3. Step 3: Cross multiply
    29,300.52x = 40,396.64 × 18,671.70
  4. Step 4: Simplify right side
    29,300.52x = 754,273,943.09
  5. Step 5: Solve for x
    x = 754,273,943.09/29,300.52
  6. Step 6: Final answer
    x = 25,742.68

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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.