Home / 31,920.45-47,883.96-12,215.58

Finding the Fourth Proportional to 31,920.45, 47,883.96 and 12,215.58

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Solution

The fourth proportional to 31,920.45, 47,883.96 and 12,215.58 is: 18,324.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,920.45 : 47,883.96 = 12,215.58 : x
  2. Step 2: Convert to fraction form
    31,920.45/47,883.96 = 12,215.58/x
  3. Step 3: Cross multiply
    31,920.45x = 47,883.96 × 12,215.58
  4. Step 4: Simplify right side
    31,920.45x = 584,930,344.10
  5. Step 5: Solve for x
    x = 584,930,344.10/31,920.45
  6. Step 6: Final answer
    x = 18,324.63

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1.5x scale

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.