Home / 12,921.19-17,831.17-7,256.02

Finding the Fourth Proportional to 12,921.19, 17,831.17 and 7,256.02

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Solution

The fourth proportional to 12,921.19, 17,831.17 and 7,256.02 is: 10,013.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.19 : 17,831.17 = 7,256.02 : x
  2. Step 2: Convert to fraction form
    12,921.19/17,831.17 = 7,256.02/x
  3. Step 3: Cross multiply
    12,921.19x = 17,831.17 × 7,256.02
  4. Step 4: Simplify right side
    12,921.19x = 129,383,326.14
  5. Step 5: Solve for x
    x = 129,383,326.14/12,921.19
  6. Step 6: Final answer
    x = 10,013.27

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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.