Home / 18,688.70-28,037.10-6,206.60

Finding the Fourth Proportional to 18,688.70, 28,037.10 and 6,206.60

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Solution

The fourth proportional to 18,688.70, 28,037.10 and 6,206.60 is: 9,311.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.70 : 28,037.10 = 6,206.60 : x
  2. Step 2: Convert to fraction form
    18,688.70/28,037.10 = 6,206.60/x
  3. Step 3: Cross multiply
    18,688.70x = 28,037.10 × 6,206.60
  4. Step 4: Simplify right side
    18,688.70x = 174,015,064.86
  5. Step 5: Solve for x
    x = 174,015,064.86/18,688.70
  6. Step 6: Final answer
    x = 9,311.25

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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.