Home / 30,600.83-42,218.31-19,996.61

Finding the Fourth Proportional to 30,600.83, 42,218.31 and 19,996.61

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Solution

The fourth proportional to 30,600.83, 42,218.31 and 19,996.61 is: 27,588.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,600.83 : 42,218.31 = 19,996.61 : x
  2. Step 2: Convert to fraction form
    30,600.83/42,218.31 = 19,996.61/x
  3. Step 3: Cross multiply
    30,600.83x = 42,218.31 × 19,996.61
  4. Step 4: Simplify right side
    30,600.83x = 844,223,037.57
  5. Step 5: Solve for x
    x = 844,223,037.57/30,600.83
  6. Step 6: Final answer
    x = 27,588.24

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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.