Home / 15,131.91-20,883.87-9,163.44

Finding the Fourth Proportional to 15,131.91, 20,883.87 and 9,163.44

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Solution

The fourth proportional to 15,131.91, 20,883.87 and 9,163.44 is: 12,646.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,131.91 : 20,883.87 = 9,163.44 : x
  2. Step 2: Convert to fraction form
    15,131.91/20,883.87 = 9,163.44/x
  3. Step 3: Cross multiply
    15,131.91x = 20,883.87 × 9,163.44
  4. Step 4: Simplify right side
    15,131.91x = 191,368,089.71
  5. Step 5: Solve for x
    x = 191,368,089.71/15,131.91
  6. Step 6: Final answer
    x = 12,646.66

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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.