Home / 18,691.64-28,037.36-6,212.60

Finding the Fourth Proportional to 18,691.64, 28,037.36 and 6,212.60

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Solution

The fourth proportional to 18,691.64, 28,037.36 and 6,212.60 is: 9,318.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.64 : 28,037.36 = 6,212.60 : x
  2. Step 2: Convert to fraction form
    18,691.64/28,037.36 = 6,212.60/x
  3. Step 3: Cross multiply
    18,691.64x = 28,037.36 × 6,212.60
  4. Step 4: Simplify right side
    18,691.64x = 174,184,902.74
  5. Step 5: Solve for x
    x = 174,184,902.74/18,691.64
  6. Step 6: Final answer
    x = 9,318.87

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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.