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Finding the Fourth Proportional to 18,254.70, 27,394.20 and 10,357.20

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Solution

The fourth proportional to 18,254.70, 27,394.20 and 10,357.20 is: 15,542.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,254.70 : 27,394.20 = 10,357.20 : x
  2. Step 2: Convert to fraction form
    18,254.70/27,394.20 = 10,357.20/x
  3. Step 3: Cross multiply
    18,254.70x = 27,394.20 × 10,357.20
  4. Step 4: Simplify right side
    18,254.70x = 283,727,208.24
  5. Step 5: Solve for x
    x = 283,727,208.24/18,254.70
  6. Step 6: Final answer
    x = 15,542.69

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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.