Home / 15,744.39-21,727.26-8,670.75

Finding the Fourth Proportional to 15,744.39, 21,727.26 and 8,670.75

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Solution

The fourth proportional to 15,744.39, 21,727.26 and 8,670.75 is: 11,965.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,744.39 : 21,727.26 = 8,670.75 : x
  2. Step 2: Convert to fraction form
    15,744.39/21,727.26 = 8,670.75/x
  3. Step 3: Cross multiply
    15,744.39x = 21,727.26 × 8,670.75
  4. Step 4: Simplify right side
    15,744.39x = 188,391,639.65
  5. Step 5: Solve for x
    x = 188,391,639.65/15,744.39
  6. Step 6: Final answer
    x = 11,965.64

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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.