Home / 15,116.68-20,860.10-8,401.92

Finding the Fourth Proportional to 15,116.68, 20,860.10 and 8,401.92

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Solution

The fourth proportional to 15,116.68, 20,860.10 and 8,401.92 is: 11,594.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,116.68 : 20,860.10 = 8,401.92 : x
  2. Step 2: Convert to fraction form
    15,116.68/20,860.10 = 8,401.92/x
  3. Step 3: Cross multiply
    15,116.68x = 20,860.10 × 8,401.92
  4. Step 4: Simplify right side
    15,116.68x = 175,264,891.39
  5. Step 5: Solve for x
    x = 175,264,891.39/15,116.68
  6. Step 6: Final answer
    x = 11,594.14

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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.