Home / 19,179.18-28,761.21-9,315.54

Finding the Fourth Proportional to 19,179.18, 28,761.21 and 9,315.54

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Solution

The fourth proportional to 19,179.18, 28,761.21 and 9,315.54 is: 13,969.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,179.18 : 28,761.21 = 9,315.54 : x
  2. Step 2: Convert to fraction form
    19,179.18/28,761.21 = 9,315.54/x
  3. Step 3: Cross multiply
    19,179.18x = 28,761.21 × 9,315.54
  4. Step 4: Simplify right side
    19,179.18x = 267,926,202.20
  5. Step 5: Solve for x
    x = 267,926,202.20/19,179.18
  6. Step 6: Final answer
    x = 13,969.64

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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.