Home / 22,585.92-31,171.50-13,638.48

Finding the Fourth Proportional to 22,585.92, 31,171.50 and 13,638.48

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Solution

The fourth proportional to 22,585.92, 31,171.50 and 13,638.48 is: 18,822.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,585.92 : 31,171.50 = 13,638.48 : x
  2. Step 2: Convert to fraction form
    22,585.92/31,171.50 = 13,638.48/x
  3. Step 3: Cross multiply
    22,585.92x = 31,171.50 × 13,638.48
  4. Step 4: Simplify right side
    22,585.92x = 425,131,879.32
  5. Step 5: Solve for x
    x = 425,131,879.32/22,585.92
  6. Step 6: Final answer
    x = 18,822.87

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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.