Home / 13,531.80-20,297.72-5,215.73

Finding the Fourth Proportional to 13,531.80, 20,297.72 and 5,215.73

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Solution

The fourth proportional to 13,531.80, 20,297.72 and 5,215.73 is: 7,823.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,531.80 : 20,297.72 = 5,215.73 : x
  2. Step 2: Convert to fraction form
    13,531.80/20,297.72 = 5,215.73/x
  3. Step 3: Cross multiply
    13,531.80x = 20,297.72 × 5,215.73
  4. Step 4: Simplify right side
    13,531.80x = 105,867,440.17
  5. Step 5: Solve for x
    x = 105,867,440.17/13,531.80
  6. Step 6: Final answer
    x = 7,823.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.