Home / 15,238.97-21,030.20-8,525.76

Finding the Fourth Proportional to 15,238.97, 21,030.20 and 8,525.76

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Solution

The fourth proportional to 15,238.97, 21,030.20 and 8,525.76 is: 11,765.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,238.97 : 21,030.20 = 8,525.76 : x
  2. Step 2: Convert to fraction form
    15,238.97/21,030.20 = 8,525.76/x
  3. Step 3: Cross multiply
    15,238.97x = 21,030.20 × 8,525.76
  4. Step 4: Simplify right side
    15,238.97x = 179,298,348.43
  5. Step 5: Solve for x
    x = 179,298,348.43/15,238.97
  6. Step 6: Final answer
    x = 11,765.78

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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.