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Finding the Fourth Proportional to 18,265.40, 27,387.51 and 7,159.08

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Solution

The fourth proportional to 18,265.40, 27,387.51 and 7,159.08 is: 10,734.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,265.40 : 27,387.51 = 7,159.08 : x
  2. Step 2: Convert to fraction form
    18,265.40/27,387.51 = 7,159.08/x
  3. Step 3: Cross multiply
    18,265.40x = 27,387.51 × 7,159.08
  4. Step 4: Simplify right side
    18,265.40x = 196,069,375.09
  5. Step 5: Solve for x
    x = 196,069,375.09/18,265.40
  6. Step 6: Final answer
    x = 10,734.47

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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.