Home / 13,406.46-20,116.71-6,394.29

Finding the Fourth Proportional to 13,406.46, 20,116.71 and 6,394.29

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Solution

The fourth proportional to 13,406.46, 20,116.71 and 6,394.29 is: 9,594.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.46 : 20,116.71 = 6,394.29 : x
  2. Step 2: Convert to fraction form
    13,406.46/20,116.71 = 6,394.29/x
  3. Step 3: Cross multiply
    13,406.46x = 20,116.71 × 6,394.29
  4. Step 4: Simplify right side
    13,406.46x = 128,632,077.59
  5. Step 5: Solve for x
    x = 128,632,077.59/13,406.46
  6. Step 6: Final answer
    x = 9,594.78

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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.