Home / 9,865.11-13,613.43-5,388.65

Finding the Fourth Proportional to 9,865.11, 13,613.43 and 5,388.65

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Solution

The fourth proportional to 9,865.11, 13,613.43 and 5,388.65 is: 7,436.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,865.11 : 13,613.43 = 5,388.65 : x
  2. Step 2: Convert to fraction form
    9,865.11/13,613.43 = 5,388.65/x
  3. Step 3: Cross multiply
    9,865.11x = 13,613.43 × 5,388.65
  4. Step 4: Simplify right side
    9,865.11x = 73,358,009.57
  5. Step 5: Solve for x
    x = 73,358,009.57/9,865.11
  6. Step 6: Final answer
    x = 7,436.11

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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.