Home / 28,164.68-42,231.86-11,289.22

Finding the Fourth Proportional to 28,164.68, 42,231.86 and 11,289.22

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Solution

The fourth proportional to 28,164.68, 42,231.86 and 11,289.22 is: 16,927.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,164.68 : 42,231.86 = 11,289.22 : x
  2. Step 2: Convert to fraction form
    28,164.68/42,231.86 = 11,289.22/x
  3. Step 3: Cross multiply
    28,164.68x = 42,231.86 × 11,289.22
  4. Step 4: Simplify right side
    28,164.68x = 476,764,580.84
  5. Step 5: Solve for x
    x = 476,764,580.84/28,164.68
  6. Step 6: Final answer
    x = 16,927.75

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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.