Home / 20,833.32-28,750.66-11,401.88

Finding the Fourth Proportional to 20,833.32, 28,750.66 and 11,401.88

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Solution

The fourth proportional to 20,833.32, 28,750.66 and 11,401.88 is: 15,734.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.32 : 28,750.66 = 11,401.88 : x
  2. Step 2: Convert to fraction form
    20,833.32/28,750.66 = 11,401.88/x
  3. Step 3: Cross multiply
    20,833.32x = 28,750.66 × 11,401.88
  4. Step 4: Simplify right side
    20,833.32x = 327,811,575.24
  5. Step 5: Solve for x
    x = 327,811,575.24/20,833.32
  6. Step 6: Final answer
    x = 15,734.97

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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.