Home / 13,622.77-20,439.56-5,305.29

Finding the Fourth Proportional to 13,622.77, 20,439.56 and 5,305.29

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Solution

The fourth proportional to 13,622.77, 20,439.56 and 5,305.29 is: 7,960.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.77 : 20,439.56 = 5,305.29 : x
  2. Step 2: Convert to fraction form
    13,622.77/20,439.56 = 5,305.29/x
  3. Step 3: Cross multiply
    13,622.77x = 20,439.56 × 5,305.29
  4. Step 4: Simplify right side
    13,622.77x = 108,437,793.27
  5. Step 5: Solve for x
    x = 108,437,793.27/13,622.77
  6. Step 6: Final answer
    x = 7,960.04

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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.