Home / 30,255.91-41,747.18-18,320.36

Finding the Fourth Proportional to 30,255.91, 41,747.18 and 18,320.36

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Solution

The fourth proportional to 30,255.91, 41,747.18 and 18,320.36 is: 25,278.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,255.91 : 41,747.18 = 18,320.36 : x
  2. Step 2: Convert to fraction form
    30,255.91/41,747.18 = 18,320.36/x
  3. Step 3: Cross multiply
    30,255.91x = 41,747.18 × 18,320.36
  4. Step 4: Simplify right side
    30,255.91x = 764,823,366.58
  5. Step 5: Solve for x
    x = 764,823,366.58/30,255.91
  6. Step 6: Final answer
    x = 25,278.48

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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.