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Finding the Fourth Proportional to 18,425.31, 25,417.17 and 13,941.15

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Solution

The fourth proportional to 18,425.31, 25,417.17 and 13,941.15 is: 19,231.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,425.31 : 25,417.17 = 13,941.15 : x
  2. Step 2: Convert to fraction form
    18,425.31/25,417.17 = 13,941.15/x
  3. Step 3: Cross multiply
    18,425.31x = 25,417.17 × 13,941.15
  4. Step 4: Simplify right side
    18,425.31x = 354,344,579.55
  5. Step 5: Solve for x
    x = 354,344,579.55/18,425.31
  6. Step 6: Final answer
    x = 19,231.40

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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.