Home / 18,774.38-25,909.46-10,390.88

Finding the Fourth Proportional to 18,774.38, 25,909.46 and 10,390.88

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Solution

The fourth proportional to 18,774.38, 25,909.46 and 10,390.88 is: 14,339.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774.38 : 25,909.46 = 10,390.88 : x
  2. Step 2: Convert to fraction form
    18,774.38/25,909.46 = 10,390.88/x
  3. Step 3: Cross multiply
    18,774.38x = 25,909.46 × 10,390.88
  4. Step 4: Simplify right side
    18,774.38x = 269,221,908.22
  5. Step 5: Solve for x
    x = 269,221,908.22/18,774.38
  6. Step 6: Final answer
    x = 14,339.86

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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.