Home / 14,378.24-21,571.20-5,146.88

Finding the Fourth Proportional to 14,378.24, 21,571.20 and 5,146.88

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Solution

The fourth proportional to 14,378.24, 21,571.20 and 5,146.88 is: 7,721.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,378.24 : 21,571.20 = 5,146.88 : x
  2. Step 2: Convert to fraction form
    14,378.24/21,571.20 = 5,146.88/x
  3. Step 3: Cross multiply
    14,378.24x = 21,571.20 × 5,146.88
  4. Step 4: Simplify right side
    14,378.24x = 111,024,377.86
  5. Step 5: Solve for x
    x = 111,024,377.86/14,378.24
  6. Step 6: Final answer
    x = 7,721.69

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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.