Home / 13,298.78-19,951.00-6,638.85

Finding the Fourth Proportional to 13,298.78, 19,951.00 and 6,638.85

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Solution

The fourth proportional to 13,298.78, 19,951.00 and 6,638.85 is: 9,959.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,298.78 : 19,951.00 = 6,638.85 : x
  2. Step 2: Convert to fraction form
    13,298.78/19,951.00 = 6,638.85/x
  3. Step 3: Cross multiply
    13,298.78x = 19,951.00 × 6,638.85
  4. Step 4: Simplify right side
    13,298.78x = 132,451,679.75
  5. Step 5: Solve for x
    x = 132,451,679.75/13,298.78
  6. Step 6: Final answer
    x = 9,959.68

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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.