Home / 13,834.40-20,719.20-8,585.60

Finding the Fourth Proportional to 13,834.40, 20,719.20 and 8,585.60

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Solution

The fourth proportional to 13,834.40, 20,719.20 and 8,585.60 is: 12,858.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,834.40 : 20,719.20 = 8,585.60 : x
  2. Step 2: Convert to fraction form
    13,834.40/20,719.20 = 8,585.60/x
  3. Step 3: Cross multiply
    13,834.40x = 20,719.20 × 8,585.60
  4. Step 4: Simplify right side
    13,834.40x = 177,886,763.52
  5. Step 5: Solve for x
    x = 177,886,763.52/13,834.40
  6. Step 6: Final answer
    x = 12,858.29

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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.