Home / 20,226.90-27,913.78-11,276.30

Finding the Fourth Proportional to 20,226.90, 27,913.78 and 11,276.30

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Solution

The fourth proportional to 20,226.90, 27,913.78 and 11,276.30 is: 15,561.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,226.90 : 27,913.78 = 11,276.30 : x
  2. Step 2: Convert to fraction form
    20,226.90/27,913.78 = 11,276.30/x
  3. Step 3: Cross multiply
    20,226.90x = 27,913.78 × 11,276.30
  4. Step 4: Simplify right side
    20,226.90x = 314,764,157.41
  5. Step 5: Solve for x
    x = 314,764,157.41/20,226.90
  6. Step 6: Final answer
    x = 15,561.66

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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.