Home / 31,272.86-43,163.24-19,939.74

Finding the Fourth Proportional to 31,272.86, 43,163.24 and 19,939.74

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Solution

The fourth proportional to 31,272.86, 43,163.24 and 19,939.74 is: 27,521.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,272.86 : 43,163.24 = 19,939.74 : x
  2. Step 2: Convert to fraction form
    31,272.86/43,163.24 = 19,939.74/x
  3. Step 3: Cross multiply
    31,272.86x = 43,163.24 × 19,939.74
  4. Step 4: Simplify right side
    31,272.86x = 860,663,683.46
  5. Step 5: Solve for x
    x = 860,663,683.46/31,272.86
  6. Step 6: Final answer
    x = 27,521.11

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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.