Home / 20,967.06-31,438.53-12,541.98

Finding the Fourth Proportional to 20,967.06, 31,438.53 and 12,541.98

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Solution

The fourth proportional to 20,967.06, 31,438.53 and 12,541.98 is: 18,805.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.06 : 31,438.53 = 12,541.98 : x
  2. Step 2: Convert to fraction form
    20,967.06/31,438.53 = 12,541.98/x
  3. Step 3: Cross multiply
    20,967.06x = 31,438.53 × 12,541.98
  4. Step 4: Simplify right side
    20,967.06x = 394,301,414.49
  5. Step 5: Solve for x
    x = 394,301,414.49/20,967.06
  6. Step 6: Final answer
    x = 18,805.76

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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.