Home / 13,025.09-17,976.42-7,988.42

Finding the Fourth Proportional to 13,025.09, 17,976.42 and 7,988.42

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Solution

The fourth proportional to 13,025.09, 17,976.42 and 7,988.42 is: 11,025.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,025.09 : 17,976.42 = 7,988.42 : x
  2. Step 2: Convert to fraction form
    13,025.09/17,976.42 = 7,988.42/x
  3. Step 3: Cross multiply
    13,025.09x = 17,976.42 × 7,988.42
  4. Step 4: Simplify right side
    13,025.09x = 143,603,193.06
  5. Step 5: Solve for x
    x = 143,603,193.06/13,025.09
  6. Step 6: Final answer
    x = 11,025.12

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Double scale
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Similar ratio
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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.