Home / 9,688.85-13,379.99-8,350.01

Finding the Fourth Proportional to 9,688.85, 13,379.99 and 8,350.01

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Solution

The fourth proportional to 9,688.85, 13,379.99 and 8,350.01 is: 11,531.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,688.85 : 13,379.99 = 8,350.01 : x
  2. Step 2: Convert to fraction form
    9,688.85/13,379.99 = 8,350.01/x
  3. Step 3: Cross multiply
    9,688.85x = 13,379.99 × 8,350.01
  4. Step 4: Simplify right side
    9,688.85x = 111,722,941.65
  5. Step 5: Solve for x
    x = 111,722,941.65/9,688.85
  6. Step 6: Final answer
    x = 11,531.09

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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.