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Finding the Fourth Proportional to 15,007.25, 20,710.01 and 8,383.25

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Solution

The fourth proportional to 15,007.25, 20,710.01 and 8,383.25 is: 11,568.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,007.25 : 20,710.01 = 8,383.25 : x
  2. Step 2: Convert to fraction form
    15,007.25/20,710.01 = 8,383.25/x
  3. Step 3: Cross multiply
    15,007.25x = 20,710.01 × 8,383.25
  4. Step 4: Simplify right side
    15,007.25x = 173,617,191.33
  5. Step 5: Solve for x
    x = 173,617,191.33/15,007.25
  6. Step 6: Final answer
    x = 11,568.89

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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.