Home / 20,409.61-30,585.20-11,626.38

Finding the Fourth Proportional to 20,409.61, 30,585.20 and 11,626.38

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Solution

The fourth proportional to 20,409.61, 30,585.20 and 11,626.38 is: 17,422.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.61 : 30,585.20 = 11,626.38 : x
  2. Step 2: Convert to fraction form
    20,409.61/30,585.20 = 11,626.38/x
  3. Step 3: Cross multiply
    20,409.61x = 30,585.20 × 11,626.38
  4. Step 4: Simplify right side
    20,409.61x = 355,595,004.65
  5. Step 5: Solve for x
    x = 355,595,004.65/20,409.61
  6. Step 6: Final answer
    x = 17,422.92

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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.