Home / 15,867.53-21,899.49-9,151.82

Finding the Fourth Proportional to 15,867.53, 21,899.49 and 9,151.82

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Solution

The fourth proportional to 15,867.53, 21,899.49 and 9,151.82 is: 12,630.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,867.53 : 21,899.49 = 9,151.82 : x
  2. Step 2: Convert to fraction form
    15,867.53/21,899.49 = 9,151.82/x
  3. Step 3: Cross multiply
    15,867.53x = 21,899.49 × 9,151.82
  4. Step 4: Simplify right side
    15,867.53x = 200,420,081.07
  5. Step 5: Solve for x
    x = 200,420,081.07/15,867.53
  6. Step 6: Final answer
    x = 12,630.83

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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.