Home / 31,696.68-47,405.29-28,209.63

Finding the Fourth Proportional to 31,696.68, 47,405.29 and 28,209.63

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Solution

The fourth proportional to 31,696.68, 47,405.29 and 28,209.63 is: 42,190.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,696.68 : 47,405.29 = 28,209.63 : x
  2. Step 2: Convert to fraction form
    31,696.68/47,405.29 = 28,209.63/x
  3. Step 3: Cross multiply
    31,696.68x = 47,405.29 × 28,209.63
  4. Step 4: Simplify right side
    31,696.68x = 1,337,285,690.94
  5. Step 5: Solve for x
    x = 1,337,285,690.94/31,696.68
  6. Step 6: Final answer
    x = 42,190.09

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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.