Home / 31,302.18-43,180.74-21,227.04

Finding the Fourth Proportional to 31,302.18, 43,180.74 and 21,227.04

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Solution

The fourth proportional to 31,302.18, 43,180.74 and 21,227.04 is: 29,282.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,302.18 : 43,180.74 = 21,227.04 : x
  2. Step 2: Convert to fraction form
    31,302.18/43,180.74 = 21,227.04/x
  3. Step 3: Cross multiply
    31,302.18x = 43,180.74 × 21,227.04
  4. Step 4: Simplify right side
    31,302.18x = 916,599,295.21
  5. Step 5: Solve for x
    x = 916,599,295.21/31,302.18
  6. Step 6: Final answer
    x = 29,282.28

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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.