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Finding the Fourth Proportional to 15,917.28, 21,966.40 and 8,844

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Solution

The fourth proportional to 15,917.28, 21,966.40 and 8,844 is: 12,205.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,917.28 : 21,966.40 = 8,844 : x
  2. Step 2: Convert to fraction form
    15,917.28/21,966.40 = 8,844/x
  3. Step 3: Cross multiply
    15,917.28x = 21,966.40 × 8,844
  4. Step 4: Simplify right side
    15,917.28x = 194,270,841.60
  5. Step 5: Solve for x
    x = 194,270,841.60/15,917.28
  6. Step 6: Final answer
    x = 12,205.03

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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.