Home / 15,744.24-21,726.90-8,670.78

Finding the Fourth Proportional to 15,744.24, 21,726.90 and 8,670.78

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Solution

The fourth proportional to 15,744.24, 21,726.90 and 8,670.78 is: 11,965.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,744.24 : 21,726.90 = 8,670.78 : x
  2. Step 2: Convert to fraction form
    15,744.24/21,726.90 = 8,670.78/x
  3. Step 3: Cross multiply
    15,744.24x = 21,726.90 × 8,670.78
  4. Step 4: Simplify right side
    15,744.24x = 188,389,169.98
  5. Step 5: Solve for x
    x = 188,389,169.98/15,744.24
  6. Step 6: Final answer
    x = 11,965.59

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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.