Home / 31,103.90-42,922.12-16,956.44

Finding the Fourth Proportional to 31,103.90, 42,922.12 and 16,956.44

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Solution

The fourth proportional to 31,103.90, 42,922.12 and 16,956.44 is: 23,399.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,103.90 : 42,922.12 = 16,956.44 : x
  2. Step 2: Convert to fraction form
    31,103.90/42,922.12 = 16,956.44/x
  3. Step 3: Cross multiply
    31,103.90x = 42,922.12 × 16,956.44
  4. Step 4: Simplify right side
    31,103.90x = 727,806,053.06
  5. Step 5: Solve for x
    x = 727,806,053.06/31,103.90
  6. Step 6: Final answer
    x = 23,399.19

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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.