Home / 10,808.85-16,205.40-7,290.12

Finding the Fourth Proportional to 10,808.85, 16,205.40 and 7,290.12

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Solution

The fourth proportional to 10,808.85, 16,205.40 and 7,290.12 is: 10,929.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,808.85 : 16,205.40 = 7,290.12 : x
  2. Step 2: Convert to fraction form
    10,808.85/16,205.40 = 7,290.12/x
  3. Step 3: Cross multiply
    10,808.85x = 16,205.40 × 7,290.12
  4. Step 4: Simplify right side
    10,808.85x = 118,139,310.65
  5. Step 5: Solve for x
    x = 118,139,310.65/10,808.85
  6. Step 6: Final answer
    x = 10,929.87

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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.