Home / 10,918.60-16,377.90-7,200.70

Finding the Fourth Proportional to 10,918.60, 16,377.90 and 7,200.70

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Solution

The fourth proportional to 10,918.60, 16,377.90 and 7,200.70 is: 10,801.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.60 : 16,377.90 = 7,200.70 : x
  2. Step 2: Convert to fraction form
    10,918.60/16,377.90 = 7,200.70/x
  3. Step 3: Cross multiply
    10,918.60x = 16,377.90 × 7,200.70
  4. Step 4: Simplify right side
    10,918.60x = 117,932,344.53
  5. Step 5: Solve for x
    x = 117,932,344.53/10,918.60
  6. Step 6: Final answer
    x = 10,801.05

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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.