Home / 15,057.44-20,778.71-8,684.30

Finding the Fourth Proportional to 15,057.44, 20,778.71 and 8,684.30

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Solution

The fourth proportional to 15,057.44, 20,778.71 and 8,684.30 is: 11,984.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,057.44 : 20,778.71 = 8,684.30 : x
  2. Step 2: Convert to fraction form
    15,057.44/20,778.71 = 8,684.30/x
  3. Step 3: Cross multiply
    15,057.44x = 20,778.71 × 8,684.30
  4. Step 4: Simplify right side
    15,057.44x = 180,448,442.90
  5. Step 5: Solve for x
    x = 180,448,442.90/15,057.44
  6. Step 6: Final answer
    x = 11,984.01

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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.