Home / 15,057.45-20,778.98-8,343.06

Finding the Fourth Proportional to 15,057.45, 20,778.98 and 8,343.06

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Solution

The fourth proportional to 15,057.45, 20,778.98 and 8,343.06 is: 11,513.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,057.45 : 20,778.98 = 8,343.06 : x
  2. Step 2: Convert to fraction form
    15,057.45/20,778.98 = 8,343.06/x
  3. Step 3: Cross multiply
    15,057.45x = 20,778.98 × 8,343.06
  4. Step 4: Simplify right side
    15,057.45x = 173,360,193.64
  5. Step 5: Solve for x
    x = 173,360,193.64/15,057.45
  6. Step 6: Final answer
    x = 11,513.25

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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.