Home / 13,257.28-19,885.45-3,396.65

Finding the Fourth Proportional to 13,257.28, 19,885.45 and 3,396.65

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Solution

The fourth proportional to 13,257.28, 19,885.45 and 3,396.65 is: 5,094.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,257.28 : 19,885.45 = 3,396.65 : x
  2. Step 2: Convert to fraction form
    13,257.28/19,885.45 = 3,396.65/x
  3. Step 3: Cross multiply
    13,257.28x = 19,885.45 × 3,396.65
  4. Step 4: Simplify right side
    13,257.28x = 67,543,913.74
  5. Step 5: Solve for x
    x = 67,543,913.74/13,257.28
  6. Step 6: Final answer
    x = 5,094.85

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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.