Home / 15,022.47-20,731.23-8,308.65

Finding the Fourth Proportional to 15,022.47, 20,731.23 and 8,308.65

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Solution

The fourth proportional to 15,022.47, 20,731.23 and 8,308.65 is: 11,466.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,022.47 : 20,731.23 = 8,308.65 : x
  2. Step 2: Convert to fraction form
    15,022.47/20,731.23 = 8,308.65/x
  3. Step 3: Cross multiply
    15,022.47x = 20,731.23 × 8,308.65
  4. Step 4: Simplify right side
    15,022.47x = 172,248,534.14
  5. Step 5: Solve for x
    x = 172,248,534.14/15,022.47
  6. Step 6: Final answer
    x = 11,466.06

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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.