Home / 31,919.99-47,883.22-12,215.12

Finding the Fourth Proportional to 31,919.99, 47,883.22 and 12,215.12

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Solution

The fourth proportional to 31,919.99, 47,883.22 and 12,215.12 is: 18,323.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,919.99 : 47,883.22 = 12,215.12 : x
  2. Step 2: Convert to fraction form
    31,919.99/47,883.22 = 12,215.12/x
  3. Step 3: Cross multiply
    31,919.99x = 47,883.22 × 12,215.12
  4. Step 4: Simplify right side
    31,919.99x = 584,899,008.33
  5. Step 5: Solve for x
    x = 584,899,008.33/31,919.99
  6. Step 6: Final answer
    x = 18,323.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.