Home / 12,599.20-18,890.70-5,206.60

Finding the Fourth Proportional to 12,599.20, 18,890.70 and 5,206.60

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Solution

The fourth proportional to 12,599.20, 18,890.70 and 5,206.60 is: 7,806.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,599.20 : 18,890.70 = 5,206.60 : x
  2. Step 2: Convert to fraction form
    12,599.20/18,890.70 = 5,206.60/x
  3. Step 3: Cross multiply
    12,599.20x = 18,890.70 × 5,206.60
  4. Step 4: Simplify right side
    12,599.20x = 98,356,318.62
  5. Step 5: Solve for x
    x = 98,356,318.62/12,599.20
  6. Step 6: Final answer
    x = 7,806.55

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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.