Home / 15,743.76-21,726.66-8,670.12

Finding the Fourth Proportional to 15,743.76, 21,726.66 and 8,670.12

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Solution

The fourth proportional to 15,743.76, 21,726.66 and 8,670.12 is: 11,964.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,743.76 : 21,726.66 = 8,670.12 : x
  2. Step 2: Convert to fraction form
    15,743.76/21,726.66 = 8,670.12/x
  3. Step 3: Cross multiply
    15,743.76x = 21,726.66 × 8,670.12
  4. Step 4: Simplify right side
    15,743.76x = 188,372,749.40
  5. Step 5: Solve for x
    x = 188,372,749.40/15,743.76
  6. Step 6: Final answer
    x = 11,964.91

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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.