Home / 30,378.78-45,553.19-18,382.95

Finding the Fourth Proportional to 30,378.78, 45,553.19 and 18,382.95

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Solution

The fourth proportional to 30,378.78, 45,553.19 and 18,382.95 is: 27,565.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,378.78 : 45,553.19 = 18,382.95 : x
  2. Step 2: Convert to fraction form
    30,378.78/45,553.19 = 18,382.95/x
  3. Step 3: Cross multiply
    30,378.78x = 45,553.19 × 18,382.95
  4. Step 4: Simplify right side
    30,378.78x = 837,401,922.20
  5. Step 5: Solve for x
    x = 837,401,922.20/30,378.78
  6. Step 6: Final answer
    x = 27,565.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.