Home / 12,512.78-17,268.81-7,476.89

Finding the Fourth Proportional to 12,512.78, 17,268.81 and 7,476.89

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Solution

The fourth proportional to 12,512.78, 17,268.81 and 7,476.89 is: 10,318.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,512.78 : 17,268.81 = 7,476.89 : x
  2. Step 2: Convert to fraction form
    12,512.78/17,268.81 = 7,476.89/x
  3. Step 3: Cross multiply
    12,512.78x = 17,268.81 × 7,476.89
  4. Step 4: Simplify right side
    12,512.78x = 129,116,971.21
  5. Step 5: Solve for x
    x = 129,116,971.21/12,512.78
  6. Step 6: Final answer
    x = 10,318.81

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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.