Home / 18,378.12-25,352.45-12,008.43

Finding the Fourth Proportional to 18,378.12, 25,352.45 and 12,008.43

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Solution

The fourth proportional to 18,378.12, 25,352.45 and 12,008.43 is: 16,565.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.12 : 25,352.45 = 12,008.43 : x
  2. Step 2: Convert to fraction form
    18,378.12/25,352.45 = 12,008.43/x
  3. Step 3: Cross multiply
    18,378.12x = 25,352.45 × 12,008.43
  4. Step 4: Simplify right side
    18,378.12x = 304,443,164.94
  5. Step 5: Solve for x
    x = 304,443,164.94/18,378.12
  6. Step 6: Final answer
    x = 16,565.53

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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.