Home / 30,722.97-42,386.11-17,972.09

Finding the Fourth Proportional to 30,722.97, 42,386.11 and 17,972.09

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Solution

The fourth proportional to 30,722.97, 42,386.11 and 17,972.09 is: 24,794.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,722.97 : 42,386.11 = 17,972.09 : x
  2. Step 2: Convert to fraction form
    30,722.97/42,386.11 = 17,972.09/x
  3. Step 3: Cross multiply
    30,722.97x = 42,386.11 × 17,972.09
  4. Step 4: Simplify right side
    30,722.97x = 761,766,983.67
  5. Step 5: Solve for x
    x = 761,766,983.67/30,722.97
  6. Step 6: Final answer
    x = 24,794.71

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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.