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Finding the Fourth Proportional to 15,754.52, 21,740.42 and 9,786.07

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Solution

The fourth proportional to 15,754.52, 21,740.42 and 9,786.07 is: 13,504.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,754.52 : 21,740.42 = 9,786.07 : x
  2. Step 2: Convert to fraction form
    15,754.52/21,740.42 = 9,786.07/x
  3. Step 3: Cross multiply
    15,754.52x = 21,740.42 × 9,786.07
  4. Step 4: Simplify right side
    15,754.52x = 212,753,258.61
  5. Step 5: Solve for x
    x = 212,753,258.61/15,754.52
  6. Step 6: Final answer
    x = 13,504.27

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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.