Home / 31,812.63-43,867.22-19,871.61

Finding the Fourth Proportional to 31,812.63, 43,867.22 and 19,871.61

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Solution

The fourth proportional to 31,812.63, 43,867.22 and 19,871.61 is: 27,401.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,812.63 : 43,867.22 = 19,871.61 : x
  2. Step 2: Convert to fraction form
    31,812.63/43,867.22 = 19,871.61/x
  3. Step 3: Cross multiply
    31,812.63x = 43,867.22 × 19,871.61
  4. Step 4: Simplify right side
    31,812.63x = 871,712,188.27
  5. Step 5: Solve for x
    x = 871,712,188.27/31,812.63
  6. Step 6: Final answer
    x = 27,401.45

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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.