Home / 13,680.82-20,521.43-9,030.61

Finding the Fourth Proportional to 13,680.82, 20,521.43 and 9,030.61

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Solution

The fourth proportional to 13,680.82, 20,521.43 and 9,030.61 is: 13,546.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.82 : 20,521.43 = 9,030.61 : x
  2. Step 2: Convert to fraction form
    13,680.82/20,521.43 = 9,030.61/x
  3. Step 3: Cross multiply
    13,680.82x = 20,521.43 × 9,030.61
  4. Step 4: Simplify right side
    13,680.82x = 185,320,883.21
  5. Step 5: Solve for x
    x = 185,320,883.21/13,680.82
  6. Step 6: Final answer
    x = 13,546.04

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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.