Home / 31,494.10-43,442.34-18,738.66

Finding the Fourth Proportional to 31,494.10, 43,442.34 and 18,738.66

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Solution

The fourth proportional to 31,494.10, 43,442.34 and 18,738.66 is: 25,847.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,494.10 : 43,442.34 = 18,738.66 : x
  2. Step 2: Convert to fraction form
    31,494.10/43,442.34 = 18,738.66/x
  3. Step 3: Cross multiply
    31,494.10x = 43,442.34 × 18,738.66
  4. Step 4: Simplify right side
    31,494.10x = 814,051,238.86
  5. Step 5: Solve for x
    x = 814,051,238.86/31,494.10
  6. Step 6: Final answer
    x = 25,847.74

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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.