Home / 31,345.54-47,018.61-7,971.97

Finding the Fourth Proportional to 31,345.54, 47,018.61 and 7,971.97

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Solution

The fourth proportional to 31,345.54, 47,018.61 and 7,971.97 is: 11,958.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,345.54 : 47,018.61 = 7,971.97 : x
  2. Step 2: Convert to fraction form
    31,345.54/47,018.61 = 7,971.97/x
  3. Step 3: Cross multiply
    31,345.54x = 47,018.61 × 7,971.97
  4. Step 4: Simplify right side
    31,345.54x = 374,830,948.36
  5. Step 5: Solve for x
    x = 374,830,948.36/31,345.54
  6. Step 6: Final answer
    x = 11,958.03

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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.