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Finding the Fourth Proportional to 15,828.25, 21,841.52 and 8,754.52

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Solution

The fourth proportional to 15,828.25, 21,841.52 and 8,754.52 is: 12,080.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,828.25 : 21,841.52 = 8,754.52 : x
  2. Step 2: Convert to fraction form
    15,828.25/21,841.52 = 8,754.52/x
  3. Step 3: Cross multiply
    15,828.25x = 21,841.52 × 8,754.52
  4. Step 4: Simplify right side
    15,828.25x = 191,212,040.03
  5. Step 5: Solve for x
    x = 191,212,040.03/15,828.25
  6. Step 6: Final answer
    x = 12,080.43

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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.