Home / 20,114.56-27,758.10-11,163.50

Finding the Fourth Proportional to 20,114.56, 27,758.10 and 11,163.50

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Solution

The fourth proportional to 20,114.56, 27,758.10 and 11,163.50 is: 15,405.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,114.56 : 27,758.10 = 11,163.50 : x
  2. Step 2: Convert to fraction form
    20,114.56/27,758.10 = 11,163.50/x
  3. Step 3: Cross multiply
    20,114.56x = 27,758.10 × 11,163.50
  4. Step 4: Simplify right side
    20,114.56x = 309,877,549.35
  5. Step 5: Solve for x
    x = 309,877,549.35/20,114.56
  6. Step 6: Final answer
    x = 15,405.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.