Home / 15,744.42-21,727.28-8,670.75

Finding the Fourth Proportional to 15,744.42, 21,727.28 and 8,670.75

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Solution

The fourth proportional to 15,744.42, 21,727.28 and 8,670.75 is: 11,965.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,744.42 : 21,727.28 = 8,670.75 : x
  2. Step 2: Convert to fraction form
    15,744.42/21,727.28 = 8,670.75/x
  3. Step 3: Cross multiply
    15,744.42x = 21,727.28 × 8,670.75
  4. Step 4: Simplify right side
    15,744.42x = 188,391,769.71
  5. Step 5: Solve for x
    x = 188,391,769.71/15,744.42
  6. Step 6: Final answer
    x = 11,965.62

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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.