Home / 12,723.92-17,559.40-7,135.12

Finding the Fourth Proportional to 12,723.92, 17,559.40 and 7,135.12

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Solution

The fourth proportional to 12,723.92, 17,559.40 and 7,135.12 is: 9,846.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,723.92 : 17,559.40 = 7,135.12 : x
  2. Step 2: Convert to fraction form
    12,723.92/17,559.40 = 7,135.12/x
  3. Step 3: Cross multiply
    12,723.92x = 17,559.40 × 7,135.12
  4. Step 4: Simplify right side
    12,723.92x = 125,288,426.13
  5. Step 5: Solve for x
    x = 125,288,426.13/12,723.92
  6. Step 6: Final answer
    x = 9,846.68

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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.