Home / 9,864.12-13,613.10-5,388.60

Finding the Fourth Proportional to 9,864.12, 13,613.10 and 5,388.60

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Solution

The fourth proportional to 9,864.12, 13,613.10 and 5,388.60 is: 7,436.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,864.12 : 13,613.10 = 5,388.60 : x
  2. Step 2: Convert to fraction form
    9,864.12/13,613.10 = 5,388.60/x
  3. Step 3: Cross multiply
    9,864.12x = 13,613.10 × 5,388.60
  4. Step 4: Simplify right side
    9,864.12x = 73,355,550.66
  5. Step 5: Solve for x
    x = 73,355,550.66/9,864.12
  6. Step 6: Final answer
    x = 7,436.60

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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.