Home / 13,814.20-20,721.30-9,436.60

Finding the Fourth Proportional to 13,814.20, 20,721.30 and 9,436.60

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Solution

The fourth proportional to 13,814.20, 20,721.30 and 9,436.60 is: 14,154.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,814.20 : 20,721.30 = 9,436.60 : x
  2. Step 2: Convert to fraction form
    13,814.20/20,721.30 = 9,436.60/x
  3. Step 3: Cross multiply
    13,814.20x = 20,721.30 × 9,436.60
  4. Step 4: Simplify right side
    13,814.20x = 195,538,619.58
  5. Step 5: Solve for x
    x = 195,538,619.58/13,814.20
  6. Step 6: Final answer
    x = 14,154.90

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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.