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Finding the Fourth Proportional to 15,160.35, 20,918.79 and 8,444.46

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Solution

The fourth proportional to 15,160.35, 20,918.79 and 8,444.46 is: 11,651.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,160.35 : 20,918.79 = 8,444.46 : x
  2. Step 2: Convert to fraction form
    15,160.35/20,918.79 = 8,444.46/x
  3. Step 3: Cross multiply
    15,160.35x = 20,918.79 × 8,444.46
  4. Step 4: Simplify right side
    15,160.35x = 176,647,885.40
  5. Step 5: Solve for x
    x = 176,647,885.40/15,160.35
  6. Step 6: Final answer
    x = 11,651.97

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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.