Home / 12,821.12-17,698.20-9,049.76

Finding the Fourth Proportional to 12,821.12, 17,698.20 and 9,049.76

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Solution

The fourth proportional to 12,821.12, 17,698.20 and 9,049.76 is: 12,492.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.12 : 17,698.20 = 9,049.76 : x
  2. Step 2: Convert to fraction form
    12,821.12/17,698.20 = 9,049.76/x
  3. Step 3: Cross multiply
    12,821.12x = 17,698.20 × 9,049.76
  4. Step 4: Simplify right side
    12,821.12x = 160,164,462.43
  5. Step 5: Solve for x
    x = 160,164,462.43/12,821.12
  6. Step 6: Final answer
    x = 12,492.24

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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.