Home / 12,632.78-17,422.97-11,117.07

Finding the Fourth Proportional to 12,632.78, 17,422.97 and 11,117.07

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Solution

The fourth proportional to 12,632.78, 17,422.97 and 11,117.07 is: 15,332.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,632.78 : 17,422.97 = 11,117.07 : x
  2. Step 2: Convert to fraction form
    12,632.78/17,422.97 = 11,117.07/x
  3. Step 3: Cross multiply
    12,632.78x = 17,422.97 × 11,117.07
  4. Step 4: Simplify right side
    12,632.78x = 193,692,321.51
  5. Step 5: Solve for x
    x = 193,692,321.51/12,632.78
  6. Step 6: Final answer
    x = 15,332.51

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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.