Home / 16,853.20-25,279.80-15,431.65

Finding the Fourth Proportional to 16,853.20, 25,279.80 and 15,431.65

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Solution

The fourth proportional to 16,853.20, 25,279.80 and 15,431.65 is: 23,147.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,853.20 : 25,279.80 = 15,431.65 : x
  2. Step 2: Convert to fraction form
    16,853.20/25,279.80 = 15,431.65/x
  3. Step 3: Cross multiply
    16,853.20x = 25,279.80 × 15,431.65
  4. Step 4: Simplify right side
    16,853.20x = 390,109,025.67
  5. Step 5: Solve for x
    x = 390,109,025.67/16,853.20
  6. Step 6: Final answer
    x = 23,147.48

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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.