Home / 15,741.81-21,723.39-8,668.08

Finding the Fourth Proportional to 15,741.81, 21,723.39 and 8,668.08

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Solution

The fourth proportional to 15,741.81, 21,723.39 and 8,668.08 is: 11,961.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,741.81 : 21,723.39 = 8,668.08 : x
  2. Step 2: Convert to fraction form
    15,741.81/21,723.39 = 8,668.08/x
  3. Step 3: Cross multiply
    15,741.81x = 21,723.39 × 8,668.08
  4. Step 4: Simplify right side
    15,741.81x = 188,300,082.39
  5. Step 5: Solve for x
    x = 188,300,082.39/15,741.81
  6. Step 6: Final answer
    x = 11,961.78

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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.