Home / 31,488-43,453.20-18,749.92

Finding the Fourth Proportional to 31,488, 43,453.20 and 18,749.92

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Solution

The fourth proportional to 31,488, 43,453.20 and 18,749.92 is: 25,874.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,488 : 43,453.20 = 18,749.92 : x
  2. Step 2: Convert to fraction form
    31,488/43,453.20 = 18,749.92/x
  3. Step 3: Cross multiply
    31,488x = 43,453.20 × 18,749.92
  4. Step 4: Simplify right side
    31,488x = 814,744,023.74
  5. Step 5: Solve for x
    x = 814,744,023.74/31,488
  6. Step 6: Final answer
    x = 25,874.75

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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.