Home / 30,619.72-42,257.65-17,191.85

Finding the Fourth Proportional to 30,619.72, 42,257.65 and 17,191.85

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Solution

The fourth proportional to 30,619.72, 42,257.65 and 17,191.85 is: 23,726.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,619.72 : 42,257.65 = 17,191.85 : x
  2. Step 2: Convert to fraction form
    30,619.72/42,257.65 = 17,191.85/x
  3. Step 3: Cross multiply
    30,619.72x = 42,257.65 × 17,191.85
  4. Step 4: Simplify right side
    30,619.72x = 726,487,180.15
  5. Step 5: Solve for x
    x = 726,487,180.15/30,619.72
  6. Step 6: Final answer
    x = 23,726.12

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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.