Home / 30,567.38-42,143.49-19,793.09

Finding the Fourth Proportional to 30,567.38, 42,143.49 and 19,793.09

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Solution

The fourth proportional to 30,567.38, 42,143.49 and 19,793.09 is: 27,288.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,567.38 : 42,143.49 = 19,793.09 : x
  2. Step 2: Convert to fraction form
    30,567.38/42,143.49 = 19,793.09/x
  3. Step 3: Cross multiply
    30,567.38x = 42,143.49 × 19,793.09
  4. Step 4: Simplify right side
    30,567.38x = 834,149,995.84
  5. Step 5: Solve for x
    x = 834,149,995.84/30,567.38
  6. Step 6: Final answer
    x = 27,288.90

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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.