Home / 15,144.24-20,898.88-8,429.76

Finding the Fourth Proportional to 15,144.24, 20,898.88 and 8,429.76

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Solution

The fourth proportional to 15,144.24, 20,898.88 and 8,429.76 is: 11,632.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,144.24 : 20,898.88 = 8,429.76 : x
  2. Step 2: Convert to fraction form
    15,144.24/20,898.88 = 8,429.76/x
  3. Step 3: Cross multiply
    15,144.24x = 20,898.88 × 8,429.76
  4. Step 4: Simplify right side
    15,144.24x = 176,172,542.67
  5. Step 5: Solve for x
    x = 176,172,542.67/15,144.24
  6. Step 6: Final answer
    x = 11,632.97

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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.