Home / 22,686.12-31,305.96-13,125.96

Finding the Fourth Proportional to 22,686.12, 31,305.96 and 13,125.96

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Solution

The fourth proportional to 22,686.12, 31,305.96 and 13,125.96 is: 18,113.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,686.12 : 31,305.96 = 13,125.96 : x
  2. Step 2: Convert to fraction form
    22,686.12/31,305.96 = 13,125.96/x
  3. Step 3: Cross multiply
    22,686.12x = 31,305.96 × 13,125.96
  4. Step 4: Simplify right side
    22,686.12x = 410,920,778.72
  5. Step 5: Solve for x
    x = 410,920,778.72/22,686.12
  6. Step 6: Final answer
    x = 18,113.31

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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.