Home / 18,712.46-28,069.77-7,025.78

Finding the Fourth Proportional to 18,712.46, 28,069.77 and 7,025.78

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Solution

The fourth proportional to 18,712.46, 28,069.77 and 7,025.78 is: 10,539.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712.46 : 28,069.77 = 7,025.78 : x
  2. Step 2: Convert to fraction form
    18,712.46/28,069.77 = 7,025.78/x
  3. Step 3: Cross multiply
    18,712.46x = 28,069.77 × 7,025.78
  4. Step 4: Simplify right side
    18,712.46x = 197,212,028.67
  5. Step 5: Solve for x
    x = 197,212,028.67/18,712.46
  6. Step 6: Final answer
    x = 10,539.08

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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.