Home / 15,023.23-20,731.47-8,308.42

Finding the Fourth Proportional to 15,023.23, 20,731.47 and 8,308.42

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Solution

The fourth proportional to 15,023.23, 20,731.47 and 8,308.42 is: 11,465.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,023.23 : 20,731.47 = 8,308.42 : x
  2. Step 2: Convert to fraction form
    15,023.23/20,731.47 = 8,308.42/x
  3. Step 3: Cross multiply
    15,023.23x = 20,731.47 × 8,308.42
  4. Step 4: Simplify right side
    15,023.23x = 172,245,759.98
  5. Step 5: Solve for x
    x = 172,245,759.98/15,023.23
  6. Step 6: Final answer
    x = 11,465.29

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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.