Home / 31,868.65-47,803.79-17,820.82

Finding the Fourth Proportional to 31,868.65, 47,803.79 and 17,820.82

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Solution

The fourth proportional to 31,868.65, 47,803.79 and 17,820.82 is: 26,731.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,868.65 : 47,803.79 = 17,820.82 : x
  2. Step 2: Convert to fraction form
    31,868.65/47,803.79 = 17,820.82/x
  3. Step 3: Cross multiply
    31,868.65x = 47,803.79 × 17,820.82
  4. Step 4: Simplify right side
    31,868.65x = 851,902,736.91
  5. Step 5: Solve for x
    x = 851,902,736.91/31,868.65
  6. Step 6: Final answer
    x = 26,731.69

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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.