Home / 22,785.75-31,445.55-13,357.35

Finding the Fourth Proportional to 22,785.75, 31,445.55 and 13,357.35

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Solution

The fourth proportional to 22,785.75, 31,445.55 and 13,357.35 is: 18,433.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,785.75 : 31,445.55 = 13,357.35 : x
  2. Step 2: Convert to fraction form
    22,785.75/31,445.55 = 13,357.35/x
  3. Step 3: Cross multiply
    22,785.75x = 31,445.55 × 13,357.35
  4. Step 4: Simplify right side
    22,785.75x = 420,029,217.29
  5. Step 5: Solve for x
    x = 420,029,217.29/22,785.75
  6. Step 6: Final answer
    x = 18,433.86

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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.