Home / 31,290.72-43,180.94-16,950.20

Finding the Fourth Proportional to 31,290.72, 43,180.94 and 16,950.20

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Solution

The fourth proportional to 31,290.72, 43,180.94 and 16,950.20 is: 23,391.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,290.72 : 43,180.94 = 16,950.20 : x
  2. Step 2: Convert to fraction form
    31,290.72/43,180.94 = 16,950.20/x
  3. Step 3: Cross multiply
    31,290.72x = 43,180.94 × 16,950.20
  4. Step 4: Simplify right side
    31,290.72x = 731,925,569.19
  5. Step 5: Solve for x
    x = 731,925,569.19/31,290.72
  6. Step 6: Final answer
    x = 23,391.14

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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.