Home / 15,744.32-21,727.12-8,670.88

Finding the Fourth Proportional to 15,744.32, 21,727.12 and 8,670.88

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Solution

The fourth proportional to 15,744.32, 21,727.12 and 8,670.88 is: 11,965.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,744.32 : 21,727.12 = 8,670.88 : x
  2. Step 2: Convert to fraction form
    15,744.32/21,727.12 = 8,670.88/x
  3. Step 3: Cross multiply
    15,744.32x = 21,727.12 × 8,670.88
  4. Step 4: Simplify right side
    15,744.32x = 188,393,250.27
  5. Step 5: Solve for x
    x = 188,393,250.27/15,744.32
  6. Step 6: Final answer
    x = 11,965.79

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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.