Home / 15,744.38-21,727.31-8,670.65

Finding the Fourth Proportional to 15,744.38, 21,727.31 and 8,670.65

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Solution

The fourth proportional to 15,744.38, 21,727.31 and 8,670.65 is: 11,965.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,744.38 : 21,727.31 = 8,670.65 : x
  2. Step 2: Convert to fraction form
    15,744.38/21,727.31 = 8,670.65/x
  3. Step 3: Cross multiply
    15,744.38x = 21,727.31 × 8,670.65
  4. Step 4: Simplify right side
    15,744.38x = 188,389,748.46
  5. Step 5: Solve for x
    x = 188,389,748.46/15,744.38
  6. Step 6: Final answer
    x = 11,965.53

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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.