Home / 12,869.80-17,762.34-9,331.72

Finding the Fourth Proportional to 12,869.80, 17,762.34 and 9,331.72

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Solution

The fourth proportional to 12,869.80, 17,762.34 and 9,331.72 is: 12,879.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,869.80 : 17,762.34 = 9,331.72 : x
  2. Step 2: Convert to fraction form
    12,869.80/17,762.34 = 9,331.72/x
  3. Step 3: Cross multiply
    12,869.80x = 17,762.34 × 9,331.72
  4. Step 4: Simplify right side
    12,869.80x = 165,753,183.42
  5. Step 5: Solve for x
    x = 165,753,183.42/12,869.80
  6. Step 6: Final answer
    x = 12,879.24

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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.