Home / 15,022.65-20,731.13-8,308.56

Finding the Fourth Proportional to 15,022.65, 20,731.13 and 8,308.56

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Solution

The fourth proportional to 15,022.65, 20,731.13 and 8,308.56 is: 11,465.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,022.65 : 20,731.13 = 8,308.56 : x
  2. Step 2: Convert to fraction form
    15,022.65/20,731.13 = 8,308.56/x
  3. Step 3: Cross multiply
    15,022.65x = 20,731.13 × 8,308.56
  4. Step 4: Simplify right side
    15,022.65x = 172,245,837.47
  5. Step 5: Solve for x
    x = 172,245,837.47/15,022.65
  6. Step 6: Final answer
    x = 11,465.74

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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.