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Finding the Fourth Proportional to 12,723.36, 17,557.78 and 7,058.36

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Solution

The fourth proportional to 12,723.36, 17,557.78 and 7,058.36 is: 9,740.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,723.36 : 17,557.78 = 7,058.36 : x
  2. Step 2: Convert to fraction form
    12,723.36/17,557.78 = 7,058.36/x
  3. Step 3: Cross multiply
    12,723.36x = 17,557.78 × 7,058.36
  4. Step 4: Simplify right side
    12,723.36x = 123,929,072.76
  5. Step 5: Solve for x
    x = 123,929,072.76/12,723.36
  6. Step 6: Final answer
    x = 9,740.28

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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.