Home / 30,115.78-41,559.16-16,686.99

Finding the Fourth Proportional to 30,115.78, 41,559.16 and 16,686.99

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Solution

The fourth proportional to 30,115.78, 41,559.16 and 16,686.99 is: 23,027.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,115.78 : 41,559.16 = 16,686.99 : x
  2. Step 2: Convert to fraction form
    30,115.78/41,559.16 = 16,686.99/x
  3. Step 3: Cross multiply
    30,115.78x = 41,559.16 × 16,686.99
  4. Step 4: Simplify right side
    30,115.78x = 693,497,245.61
  5. Step 5: Solve for x
    x = 693,497,245.61/30,115.78
  6. Step 6: Final answer
    x = 23,027.71

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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.