Home / 30,578.12-42,182.26-19,973.96

Finding the Fourth Proportional to 30,578.12, 42,182.26 and 19,973.96

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Solution

The fourth proportional to 30,578.12, 42,182.26 and 19,973.96 is: 27,553.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,578.12 : 42,182.26 = 19,973.96 : x
  2. Step 2: Convert to fraction form
    30,578.12/42,182.26 = 19,973.96/x
  3. Step 3: Cross multiply
    30,578.12x = 42,182.26 × 19,973.96
  4. Step 4: Simplify right side
    30,578.12x = 842,546,773.95
  5. Step 5: Solve for x
    x = 842,546,773.95/30,578.12
  6. Step 6: Final answer
    x = 27,553.91

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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.