Home / 15,608.82-21,540.18-8,535.90

Finding the Fourth Proportional to 15,608.82, 21,540.18 and 8,535.90

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Solution

The fourth proportional to 15,608.82, 21,540.18 and 8,535.90 is: 11,779.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,608.82 : 21,540.18 = 8,535.90 : x
  2. Step 2: Convert to fraction form
    15,608.82/21,540.18 = 8,535.90/x
  3. Step 3: Cross multiply
    15,608.82x = 21,540.18 × 8,535.90
  4. Step 4: Simplify right side
    15,608.82x = 183,864,822.46
  5. Step 5: Solve for x
    x = 183,864,822.46/15,608.82
  6. Step 6: Final answer
    x = 11,779.55

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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.