Home / 12,813.12-17,687.16-9,041.76

Finding the Fourth Proportional to 12,813.12, 17,687.16 and 9,041.76

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Solution

The fourth proportional to 12,813.12, 17,687.16 and 9,041.76 is: 12,481.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,813.12 : 17,687.16 = 9,041.76 : x
  2. Step 2: Convert to fraction form
    12,813.12/17,687.16 = 9,041.76/x
  3. Step 3: Cross multiply
    12,813.12x = 17,687.16 × 9,041.76
  4. Step 4: Simplify right side
    12,813.12x = 159,923,055.80
  5. Step 5: Solve for x
    x = 159,923,055.80/12,813.12
  6. Step 6: Final answer
    x = 12,481.20

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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.