Home / 18,989.43-28,501.62-9,635.95

Finding the Fourth Proportional to 18,989.43, 28,501.62 and 9,635.95

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Solution

The fourth proportional to 18,989.43, 28,501.62 and 9,635.95 is: 14,462.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.43 : 28,501.62 = 9,635.95 : x
  2. Step 2: Convert to fraction form
    18,989.43/28,501.62 = 9,635.95/x
  3. Step 3: Cross multiply
    18,989.43x = 28,501.62 × 9,635.95
  4. Step 4: Simplify right side
    18,989.43x = 274,640,185.24
  5. Step 5: Solve for x
    x = 274,640,185.24/18,989.43
  6. Step 6: Final answer
    x = 14,462.79

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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.