Home / 15,028.96-20,740.29-8,315.06

Finding the Fourth Proportional to 15,028.96, 20,740.29 and 8,315.06

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Solution

The fourth proportional to 15,028.96, 20,740.29 and 8,315.06 is: 11,474.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,028.96 : 20,740.29 = 8,315.06 : x
  2. Step 2: Convert to fraction form
    15,028.96/20,740.29 = 8,315.06/x
  3. Step 3: Cross multiply
    15,028.96x = 20,740.29 × 8,315.06
  4. Step 4: Simplify right side
    15,028.96x = 172,456,620.88
  5. Step 5: Solve for x
    x = 172,456,620.88/15,028.96
  6. Step 6: Final answer
    x = 11,474.95

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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.