Home / 20,409.64-30,585.25-11,626.40

Finding the Fourth Proportional to 20,409.64, 30,585.25 and 11,626.40

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Solution

The fourth proportional to 20,409.64, 30,585.25 and 11,626.40 is: 17,422.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.64 : 30,585.25 = 11,626.40 : x
  2. Step 2: Convert to fraction form
    20,409.64/30,585.25 = 11,626.40/x
  3. Step 3: Cross multiply
    20,409.64x = 30,585.25 × 11,626.40
  4. Step 4: Simplify right side
    20,409.64x = 355,596,441.60
  5. Step 5: Solve for x
    x = 355,596,441.60/20,409.64
  6. Step 6: Final answer
    x = 17,422.97

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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.