Home / 15,744.29-21,726.99-8,670.56

Finding the Fourth Proportional to 15,744.29, 21,726.99 and 8,670.56

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Solution

The fourth proportional to 15,744.29, 21,726.99 and 8,670.56 is: 11,965.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,744.29 : 21,726.99 = 8,670.56 : x
  2. Step 2: Convert to fraction form
    15,744.29/21,726.99 = 8,670.56/x
  3. Step 3: Cross multiply
    15,744.29x = 21,726.99 × 8,670.56
  4. Step 4: Simplify right side
    15,744.29x = 188,385,224.73
  5. Step 5: Solve for x
    x = 188,385,224.73/15,744.29
  6. Step 6: Final answer
    x = 11,965.30

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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.