Home / 19,179.19-28,757.42-7,478.74

Finding the Fourth Proportional to 19,179.19, 28,757.42 and 7,478.74

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Solution

The fourth proportional to 19,179.19, 28,757.42 and 7,478.74 is: 11,213.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,179.19 : 28,757.42 = 7,478.74 : x
  2. Step 2: Convert to fraction form
    19,179.19/28,757.42 = 7,478.74/x
  3. Step 3: Cross multiply
    19,179.19x = 28,757.42 × 7,478.74
  4. Step 4: Simplify right side
    19,179.19x = 215,069,086.07
  5. Step 5: Solve for x
    x = 215,069,086.07/19,179.19
  6. Step 6: Final answer
    x = 11,213.67

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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.