Home / 15,116.66-20,860.97-8,402.07

Finding the Fourth Proportional to 15,116.66, 20,860.97 and 8,402.07

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Solution

The fourth proportional to 15,116.66, 20,860.97 and 8,402.07 is: 11,594.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,116.66 : 20,860.97 = 8,402.07 : x
  2. Step 2: Convert to fraction form
    15,116.66/20,860.97 = 8,402.07/x
  3. Step 3: Cross multiply
    15,116.66x = 20,860.97 × 8,402.07
  4. Step 4: Simplify right side
    15,116.66x = 175,275,288.20
  5. Step 5: Solve for x
    x = 175,275,288.20/15,116.66
  6. Step 6: Final answer
    x = 11,594.85

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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.