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Finding the Fourth Proportional to 15,097.36, 20,834.90 and 8,383.10

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Solution

The fourth proportional to 15,097.36, 20,834.90 and 8,383.10 is: 11,568.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,097.36 : 20,834.90 = 8,383.10 : x
  2. Step 2: Convert to fraction form
    15,097.36/20,834.90 = 8,383.10/x
  3. Step 3: Cross multiply
    15,097.36x = 20,834.90 × 8,383.10
  4. Step 4: Simplify right side
    15,097.36x = 174,661,050.19
  5. Step 5: Solve for x
    x = 174,661,050.19/15,097.36
  6. Step 6: Final answer
    x = 11,568.98

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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.