Home / 31,690.97-47,583.18-17,678.38

Finding the Fourth Proportional to 31,690.97, 47,583.18 and 17,678.38

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Solution

The fourth proportional to 31,690.97, 47,583.18 and 17,678.38 is: 26,543.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,690.97 : 47,583.18 = 17,678.38 : x
  2. Step 2: Convert to fraction form
    31,690.97/47,583.18 = 17,678.38/x
  3. Step 3: Cross multiply
    31,690.97x = 47,583.18 × 17,678.38
  4. Step 4: Simplify right side
    31,690.97x = 841,193,537.65
  5. Step 5: Solve for x
    x = 841,193,537.65/31,690.97
  6. Step 6: Final answer
    x = 26,543.63

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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.