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Finding the Fourth Proportional to 34,165.80, 51,248.70 and 18,419.40

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Solution

The fourth proportional to 34,165.80, 51,248.70 and 18,419.40 is: 27,629.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,165.80 : 51,248.70 = 18,419.40 : x
  2. Step 2: Convert to fraction form
    34,165.80/51,248.70 = 18,419.40/x
  3. Step 3: Cross multiply
    34,165.80x = 51,248.70 × 18,419.40
  4. Step 4: Simplify right side
    34,165.80x = 943,970,304.78
  5. Step 5: Solve for x
    x = 943,970,304.78/34,165.80
  6. Step 6: Final answer
    x = 27,629.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.