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Finding the Fourth Proportional to 12,383.23, 17,088.87 and 7,078.03

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Solution

The fourth proportional to 12,383.23, 17,088.87 and 7,078.03 is: 9,767.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,383.23 : 17,088.87 = 7,078.03 : x
  2. Step 2: Convert to fraction form
    12,383.23/17,088.87 = 7,078.03/x
  3. Step 3: Cross multiply
    12,383.23x = 17,088.87 × 7,078.03
  4. Step 4: Simplify right side
    12,383.23x = 120,955,534.53
  5. Step 5: Solve for x
    x = 120,955,534.53/12,383.23
  6. Step 6: Final answer
    x = 9,767.69

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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.