Home / 15,022.80-20,731.34-8,308.41

Finding the Fourth Proportional to 15,022.80, 20,731.34 and 8,308.41

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Solution

The fourth proportional to 15,022.80, 20,731.34 and 8,308.41 is: 11,465.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,022.80 : 20,731.34 = 8,308.41 : x
  2. Step 2: Convert to fraction form
    15,022.80/20,731.34 = 8,308.41/x
  3. Step 3: Cross multiply
    15,022.80x = 20,731.34 × 8,308.41
  4. Step 4: Simplify right side
    15,022.80x = 172,244,415.60
  5. Step 5: Solve for x
    x = 172,244,415.60/15,022.80
  6. Step 6: Final answer
    x = 11,465.53

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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.