Home / 10,122.64-15,180.30-4,279.70

Finding the Fourth Proportional to 10,122.64, 15,180.30 and 4,279.70

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Solution

The fourth proportional to 10,122.64, 15,180.30 and 4,279.70 is: 6,418.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,122.64 : 15,180.30 = 4,279.70 : x
  2. Step 2: Convert to fraction form
    10,122.64/15,180.30 = 4,279.70/x
  3. Step 3: Cross multiply
    10,122.64x = 15,180.30 × 4,279.70
  4. Step 4: Simplify right side
    10,122.64x = 64,967,129.91
  5. Step 5: Solve for x
    x = 64,967,129.91/10,122.64
  6. Step 6: Final answer
    x = 6,418.01

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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.