Home / 30,385.12-41,934.36-18,445.72

Finding the Fourth Proportional to 30,385.12, 41,934.36 and 18,445.72

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Solution

The fourth proportional to 30,385.12, 41,934.36 and 18,445.72 is: 25,456.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,385.12 : 41,934.36 = 18,445.72 : x
  2. Step 2: Convert to fraction form
    30,385.12/41,934.36 = 18,445.72/x
  3. Step 3: Cross multiply
    30,385.12x = 41,934.36 × 18,445.72
  4. Step 4: Simplify right side
    30,385.12x = 773,509,462.94
  5. Step 5: Solve for x
    x = 773,509,462.94/30,385.12
  6. Step 6: Final answer
    x = 25,456.85

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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.