Home / 13,366.32-20,037.60-7,121.76

Finding the Fourth Proportional to 13,366.32, 20,037.60 and 7,121.76

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Solution

The fourth proportional to 13,366.32, 20,037.60 and 7,121.76 is: 10,676.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,366.32 : 20,037.60 = 7,121.76 : x
  2. Step 2: Convert to fraction form
    13,366.32/20,037.60 = 7,121.76/x
  3. Step 3: Cross multiply
    13,366.32x = 20,037.60 × 7,121.76
  4. Step 4: Simplify right side
    13,366.32x = 142,702,978.18
  5. Step 5: Solve for x
    x = 142,702,978.18/13,366.32
  6. Step 6: Final answer
    x = 10,676.31

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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.