Home / 31,370.49-43,267.37-21,306.65

Finding the Fourth Proportional to 31,370.49, 43,267.37 and 21,306.65

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Solution

The fourth proportional to 31,370.49, 43,267.37 and 21,306.65 is: 29,386.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,370.49 : 43,267.37 = 21,306.65 : x
  2. Step 2: Convert to fraction form
    31,370.49/43,267.37 = 21,306.65/x
  3. Step 3: Cross multiply
    31,370.49x = 43,267.37 × 21,306.65
  4. Step 4: Simplify right side
    31,370.49x = 921,882,386.14
  5. Step 5: Solve for x
    x = 921,882,386.14/31,370.49
  6. Step 6: Final answer
    x = 29,386.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.