Home / 31,749.28-47,645.76-14,238.68

Finding the Fourth Proportional to 31,749.28, 47,645.76 and 14,238.68

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Solution

The fourth proportional to 31,749.28, 47,645.76 and 14,238.68 is: 21,367.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,749.28 : 47,645.76 = 14,238.68 : x
  2. Step 2: Convert to fraction form
    31,749.28/47,645.76 = 14,238.68/x
  3. Step 3: Cross multiply
    31,749.28x = 47,645.76 × 14,238.68
  4. Step 4: Simplify right side
    31,749.28x = 678,412,730.00
  5. Step 5: Solve for x
    x = 678,412,730.00/31,749.28
  6. Step 6: Final answer
    x = 21,367.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.