Home / 39,074.84-53,923.20-21,170.29

Finding the Fourth Proportional to 39,074.84, 53,923.20 and 21,170.29

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Solution

The fourth proportional to 39,074.84, 53,923.20 and 21,170.29 is: 29,214.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,074.84 : 53,923.20 = 21,170.29 : x
  2. Step 2: Convert to fraction form
    39,074.84/53,923.20 = 21,170.29/x
  3. Step 3: Cross multiply
    39,074.84x = 53,923.20 × 21,170.29
  4. Step 4: Simplify right side
    39,074.84x = 1,141,569,781.73
  5. Step 5: Solve for x
    x = 1,141,569,781.73/39,074.84
  6. Step 6: Final answer
    x = 29,214.96

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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.