Home / 15,723.28-21,697.97-8,649.71

Finding the Fourth Proportional to 15,723.28, 21,697.97 and 8,649.71

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Solution

The fourth proportional to 15,723.28, 21,697.97 and 8,649.71 is: 11,936.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,723.28 : 21,697.97 = 8,649.71 : x
  2. Step 2: Convert to fraction form
    15,723.28/21,697.97 = 8,649.71/x
  3. Step 3: Cross multiply
    15,723.28x = 21,697.97 × 8,649.71
  4. Step 4: Simplify right side
    15,723.28x = 187,681,148.09
  5. Step 5: Solve for x
    x = 187,681,148.09/15,723.28
  6. Step 6: Final answer
    x = 11,936.51

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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.