Home / 11,815.54-16,306.44-7,099.72

Finding the Fourth Proportional to 11,815.54, 16,306.44 and 7,099.72

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Solution

The fourth proportional to 11,815.54, 16,306.44 and 7,099.72 is: 9,798.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.54 : 16,306.44 = 7,099.72 : x
  2. Step 2: Convert to fraction form
    11,815.54/16,306.44 = 7,099.72/x
  3. Step 3: Cross multiply
    11,815.54x = 16,306.44 × 7,099.72
  4. Step 4: Simplify right side
    11,815.54x = 115,771,158.20
  5. Step 5: Solve for x
    x = 115,771,158.20/11,815.54
  6. Step 6: Final answer
    x = 9,798.21

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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.