Home / 12,921.16-17,829.84-7,256.56

Finding the Fourth Proportional to 12,921.16, 17,829.84 and 7,256.56

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Solution

The fourth proportional to 12,921.16, 17,829.84 and 7,256.56 is: 10,013.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.16 : 17,829.84 = 7,256.56 : x
  2. Step 2: Convert to fraction form
    12,921.16/17,829.84 = 7,256.56/x
  3. Step 3: Cross multiply
    12,921.16x = 17,829.84 × 7,256.56
  4. Step 4: Simplify right side
    12,921.16x = 129,383,303.75
  5. Step 5: Solve for x
    x = 129,383,303.75/12,921.16
  6. Step 6: Final answer
    x = 10,013.29

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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.