Home / 15,209.06-20,987.14-8,493.76

Finding the Fourth Proportional to 15,209.06, 20,987.14 and 8,493.76

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Solution

The fourth proportional to 15,209.06, 20,987.14 and 8,493.76 is: 11,720.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,209.06 : 20,987.14 = 8,493.76 : x
  2. Step 2: Convert to fraction form
    15,209.06/20,987.14 = 8,493.76/x
  3. Step 3: Cross multiply
    15,209.06x = 20,987.14 × 8,493.76
  4. Step 4: Simplify right side
    15,209.06x = 178,259,677.78
  5. Step 5: Solve for x
    x = 178,259,677.78/15,209.06
  6. Step 6: Final answer
    x = 11,720.62

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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.