Home / 31,830.92-43,923.30-18,400.04

Finding the Fourth Proportional to 31,830.92, 43,923.30 and 18,400.04

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Solution

The fourth proportional to 31,830.92, 43,923.30 and 18,400.04 is: 25,390.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,830.92 : 43,923.30 = 18,400.04 : x
  2. Step 2: Convert to fraction form
    31,830.92/43,923.30 = 18,400.04/x
  3. Step 3: Cross multiply
    31,830.92x = 43,923.30 × 18,400.04
  4. Step 4: Simplify right side
    31,830.92x = 808,190,476.93
  5. Step 5: Solve for x
    x = 808,190,476.93/31,830.92
  6. Step 6: Final answer
    x = 25,390.11

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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.