Home / 31,814.24-43,901.40-19,879.76

Finding the Fourth Proportional to 31,814.24, 43,901.40 and 19,879.76

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Solution

The fourth proportional to 31,814.24, 43,901.40 and 19,879.76 is: 27,432.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,814.24 : 43,901.40 = 19,879.76 : x
  2. Step 2: Convert to fraction form
    31,814.24/43,901.40 = 19,879.76/x
  3. Step 3: Cross multiply
    31,814.24x = 43,901.40 × 19,879.76
  4. Step 4: Simplify right side
    31,814.24x = 872,749,295.66
  5. Step 5: Solve for x
    x = 872,749,295.66/31,814.24
  6. Step 6: Final answer
    x = 27,432.66

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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.