Home / 18,981.99-28,452.74-9,628.92

Finding the Fourth Proportional to 18,981.99, 28,452.74 and 9,628.92

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Solution

The fourth proportional to 18,981.99, 28,452.74 and 9,628.92 is: 14,433.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981.99 : 28,452.74 = 9,628.92 : x
  2. Step 2: Convert to fraction form
    18,981.99/28,452.74 = 9,628.92/x
  3. Step 3: Cross multiply
    18,981.99x = 28,452.74 × 9,628.92
  4. Step 4: Simplify right side
    18,981.99x = 273,969,109.10
  5. Step 5: Solve for x
    x = 273,969,109.10/18,981.99
  6. Step 6: Final answer
    x = 14,433.11

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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.