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Finding the Fourth Proportional to 29,179.84, 40,244.40 and 18,551.20

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Solution

The fourth proportional to 29,179.84, 40,244.40 and 18,551.20 is: 25,585.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,179.84 : 40,244.40 = 18,551.20 : x
  2. Step 2: Convert to fraction form
    29,179.84/40,244.40 = 18,551.20/x
  3. Step 3: Cross multiply
    29,179.84x = 40,244.40 × 18,551.20
  4. Step 4: Simplify right side
    29,179.84x = 746,581,913.28
  5. Step 5: Solve for x
    x = 746,581,913.28/29,179.84
  6. Step 6: Final answer
    x = 25,585.54

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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.