Home / 12,388.72-17,097.08-7,084.60

Finding the Fourth Proportional to 12,388.72, 17,097.08 and 7,084.60

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Solution

The fourth proportional to 12,388.72, 17,097.08 and 7,084.60 is: 9,777.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.72 : 17,097.08 = 7,084.60 : x
  2. Step 2: Convert to fraction form
    12,388.72/17,097.08 = 7,084.60/x
  3. Step 3: Cross multiply
    12,388.72x = 17,097.08 × 7,084.60
  4. Step 4: Simplify right side
    12,388.72x = 121,125,972.97
  5. Step 5: Solve for x
    x = 121,125,972.97/12,388.72
  6. Step 6: Final answer
    x = 9,777.12

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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.