Home / 13,259.70-19,889.55-11,121.30

Finding the Fourth Proportional to 13,259.70, 19,889.55 and 11,121.30

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Solution

The fourth proportional to 13,259.70, 19,889.55 and 11,121.30 is: 16,681.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,259.70 : 19,889.55 = 11,121.30 : x
  2. Step 2: Convert to fraction form
    13,259.70/19,889.55 = 11,121.30/x
  3. Step 3: Cross multiply
    13,259.70x = 19,889.55 × 11,121.30
  4. Step 4: Simplify right side
    13,259.70x = 221,197,652.42
  5. Step 5: Solve for x
    x = 221,197,652.42/13,259.70
  6. Step 6: Final answer
    x = 16,681.95

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Similar ratio
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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.