Home / 20,943.30-31,415.22-5,360.52

Finding the Fourth Proportional to 20,943.30, 31,415.22 and 5,360.52

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Solution

The fourth proportional to 20,943.30, 31,415.22 and 5,360.52 is: 8,040.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.30 : 31,415.22 = 5,360.52 : x
  2. Step 2: Convert to fraction form
    20,943.30/31,415.22 = 5,360.52/x
  3. Step 3: Cross multiply
    20,943.30x = 31,415.22 × 5,360.52
  4. Step 4: Simplify right side
    20,943.30x = 168,401,915.11
  5. Step 5: Solve for x
    x = 168,401,915.11/20,943.30
  6. Step 6: Final answer
    x = 8,040.85

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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.