Home / 15,608.88-21,540.60-8,535.15

Finding the Fourth Proportional to 15,608.88, 21,540.60 and 8,535.15

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Solution

The fourth proportional to 15,608.88, 21,540.60 and 8,535.15 is: 11,778.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,608.88 : 21,540.60 = 8,535.15 : x
  2. Step 2: Convert to fraction form
    15,608.88/21,540.60 = 8,535.15/x
  3. Step 3: Cross multiply
    15,608.88x = 21,540.60 × 8,535.15
  4. Step 4: Simplify right side
    15,608.88x = 183,852,252.09
  5. Step 5: Solve for x
    x = 183,852,252.09/15,608.88
  6. Step 6: Final answer
    x = 11,778.70

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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.