Home / 15,608.88-21,540.26-8,535.36

Finding the Fourth Proportional to 15,608.88, 21,540.26 and 8,535.36

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Solution

The fourth proportional to 15,608.88, 21,540.26 and 8,535.36 is: 11,778.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,608.88 : 21,540.26 = 8,535.36 : x
  2. Step 2: Convert to fraction form
    15,608.88/21,540.26 = 8,535.36/x
  3. Step 3: Cross multiply
    15,608.88x = 21,540.26 × 8,535.36
  4. Step 4: Simplify right side
    15,608.88x = 183,853,873.59
  5. Step 5: Solve for x
    x = 183,853,873.59/15,608.88
  6. Step 6: Final answer
    x = 11,778.80

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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.