Home / 20,951.06-31,420.44-6,156.46

Finding the Fourth Proportional to 20,951.06, 31,420.44 and 6,156.46

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Solution

The fourth proportional to 20,951.06, 31,420.44 and 6,156.46 is: 9,232.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,951.06 : 31,420.44 = 6,156.46 : x
  2. Step 2: Convert to fraction form
    20,951.06/31,420.44 = 6,156.46/x
  3. Step 3: Cross multiply
    20,951.06x = 31,420.44 × 6,156.46
  4. Step 4: Simplify right side
    20,951.06x = 193,438,775.98
  5. Step 5: Solve for x
    x = 193,438,775.98/20,951.06
  6. Step 6: Final answer
    x = 9,232.89

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1.5x scale

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.