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Finding the Fourth Proportional to 12,400.51, 17,108.41 and 7,926.88

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Solution

The fourth proportional to 12,400.51, 17,108.41 and 7,926.88 is: 10,936.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,400.51 : 17,108.41 = 7,926.88 : x
  2. Step 2: Convert to fraction form
    12,400.51/17,108.41 = 7,926.88/x
  3. Step 3: Cross multiply
    12,400.51x = 17,108.41 × 7,926.88
  4. Step 4: Simplify right side
    12,400.51x = 135,616,313.06
  5. Step 5: Solve for x
    x = 135,616,313.06/12,400.51
  6. Step 6: Final answer
    x = 10,936.35

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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.