Home / 20,989.56-28,964.46-12,037.44

Finding the Fourth Proportional to 20,989.56, 28,964.46 and 12,037.44

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Solution

The fourth proportional to 20,989.56, 28,964.46 and 12,037.44 is: 16,611.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,989.56 : 28,964.46 = 12,037.44 : x
  2. Step 2: Convert to fraction form
    20,989.56/28,964.46 = 12,037.44/x
  3. Step 3: Cross multiply
    20,989.56x = 28,964.46 × 12,037.44
  4. Step 4: Simplify right side
    20,989.56x = 348,657,949.38
  5. Step 5: Solve for x
    x = 348,657,949.38/20,989.56
  6. Step 6: Final answer
    x = 16,611.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.