Home / 28,119.51-42,179.31-8,396.52

Finding the Fourth Proportional to 28,119.51, 42,179.31 and 8,396.52

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Solution

The fourth proportional to 28,119.51, 42,179.31 and 8,396.52 is: 12,594.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119.51 : 42,179.31 = 8,396.52 : x
  2. Step 2: Convert to fraction form
    28,119.51/42,179.31 = 8,396.52/x
  3. Step 3: Cross multiply
    28,119.51x = 42,179.31 × 8,396.52
  4. Step 4: Simplify right side
    28,119.51x = 354,159,420.00
  5. Step 5: Solve for x
    x = 354,159,420.00/28,119.51
  6. Step 6: Final answer
    x = 12,594.79

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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.