Home / 31,186.89-43,038.54-17,040.65

Finding the Fourth Proportional to 31,186.89, 43,038.54 and 17,040.65

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Solution

The fourth proportional to 31,186.89, 43,038.54 and 17,040.65 is: 23,516.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,186.89 : 43,038.54 = 17,040.65 : x
  2. Step 2: Convert to fraction form
    31,186.89/43,038.54 = 17,040.65/x
  3. Step 3: Cross multiply
    31,186.89x = 43,038.54 × 17,040.65
  4. Step 4: Simplify right side
    31,186.89x = 733,404,481.46
  5. Step 5: Solve for x
    x = 733,404,481.46/31,186.89
  6. Step 6: Final answer
    x = 23,516.44

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1.5x scale

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.