Home / 20,943-31,414.50-5,360.63

Finding the Fourth Proportional to 20,943, 31,414.50 and 5,360.63

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Solution

The fourth proportional to 20,943, 31,414.50 and 5,360.63 is: 8,040.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943 : 31,414.50 = 5,360.63 : x
  2. Step 2: Convert to fraction form
    20,943/31,414.50 = 5,360.63/x
  3. Step 3: Cross multiply
    20,943x = 31,414.50 × 5,360.63
  4. Step 4: Simplify right side
    20,943x = 168,401,354.06
  5. Step 5: Solve for x
    x = 168,401,354.06/20,943
  6. Step 6: Final answer
    x = 8,040.94

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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.