Home / 31,819.23-47,756.52-20,738.36

Finding the Fourth Proportional to 31,819.23, 47,756.52 and 20,738.36

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Solution

The fourth proportional to 31,819.23, 47,756.52 and 20,738.36 is: 31,125.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,819.23 : 47,756.52 = 20,738.36 : x
  2. Step 2: Convert to fraction form
    31,819.23/47,756.52 = 20,738.36/x
  3. Step 3: Cross multiply
    31,819.23x = 47,756.52 × 20,738.36
  4. Step 4: Simplify right side
    31,819.23x = 990,391,665.32
  5. Step 5: Solve for x
    x = 990,391,665.32/31,819.23
  6. Step 6: Final answer
    x = 31,125.57

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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.