Home / 15,117.33-20,860.34-8,401.88

Finding the Fourth Proportional to 15,117.33, 20,860.34 and 8,401.88

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Solution

The fourth proportional to 15,117.33, 20,860.34 and 8,401.88 is: 11,593.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.33 : 20,860.34 = 8,401.88 : x
  2. Step 2: Convert to fraction form
    15,117.33/20,860.34 = 8,401.88/x
  3. Step 3: Cross multiply
    15,117.33x = 20,860.34 × 8,401.88
  4. Step 4: Simplify right side
    15,117.33x = 175,265,966.24
  5. Step 5: Solve for x
    x = 175,265,966.24/15,117.33
  6. Step 6: Final answer
    x = 11,593.71

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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.