Home / 15,057.85-20,778.27-8,343.31

Finding the Fourth Proportional to 15,057.85, 20,778.27 and 8,343.31

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Solution

The fourth proportional to 15,057.85, 20,778.27 and 8,343.31 is: 11,512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,057.85 : 20,778.27 = 8,343.31 : x
  2. Step 2: Convert to fraction form
    15,057.85/20,778.27 = 8,343.31/x
  3. Step 3: Cross multiply
    15,057.85x = 20,778.27 × 8,343.31
  4. Step 4: Simplify right side
    15,057.85x = 173,359,547.87
  5. Step 5: Solve for x
    x = 173,359,547.87/15,057.85
  6. Step 6: Final answer
    x = 11,512.90

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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.