Home / 15,743.38-21,726.22-8,670.20

Finding the Fourth Proportional to 15,743.38, 21,726.22 and 8,670.20

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Solution

The fourth proportional to 15,743.38, 21,726.22 and 8,670.20 is: 11,965.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,743.38 : 21,726.22 = 8,670.20 : x
  2. Step 2: Convert to fraction form
    15,743.38/21,726.22 = 8,670.20/x
  3. Step 3: Cross multiply
    15,743.38x = 21,726.22 × 8,670.20
  4. Step 4: Simplify right side
    15,743.38x = 188,370,672.64
  5. Step 5: Solve for x
    x = 188,370,672.64/15,743.38
  6. Step 6: Final answer
    x = 11,965.07

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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.