Home / 25,747.20-38,620.80-18,311.40

Finding the Fourth Proportional to 25,747.20, 38,620.80 and 18,311.40

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Solution

The fourth proportional to 25,747.20, 38,620.80 and 18,311.40 is: 27,467.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,747.20 : 38,620.80 = 18,311.40 : x
  2. Step 2: Convert to fraction form
    25,747.20/38,620.80 = 18,311.40/x
  3. Step 3: Cross multiply
    25,747.20x = 38,620.80 × 18,311.40
  4. Step 4: Simplify right side
    25,747.20x = 707,200,917.12
  5. Step 5: Solve for x
    x = 707,200,917.12/25,747.20
  6. Step 6: Final answer
    x = 27,467.10

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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.