Home / 12,921.71-17,836.44-7,616.21

Finding the Fourth Proportional to 12,921.71, 17,836.44 and 7,616.21

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Solution

The fourth proportional to 12,921.71, 17,836.44 and 7,616.21 is: 10,513.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.71 : 17,836.44 = 7,616.21 : x
  2. Step 2: Convert to fraction form
    12,921.71/17,836.44 = 7,616.21/x
  3. Step 3: Cross multiply
    12,921.71x = 17,836.44 × 7,616.21
  4. Step 4: Simplify right side
    12,921.71x = 135,845,954.95
  5. Step 5: Solve for x
    x = 135,845,954.95/12,921.71
  6. Step 6: Final answer
    x = 10,513.01

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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.