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Finding the Fourth Proportional to 12,383.16, 17,088.50 and 7,005.50

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Solution

The fourth proportional to 12,383.16, 17,088.50 and 7,005.50 is: 9,667.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,383.16 : 17,088.50 = 7,005.50 : x
  2. Step 2: Convert to fraction form
    12,383.16/17,088.50 = 7,005.50/x
  3. Step 3: Cross multiply
    12,383.16x = 17,088.50 × 7,005.50
  4. Step 4: Simplify right side
    12,383.16x = 119,713,486.75
  5. Step 5: Solve for x
    x = 119,713,486.75/12,383.16
  6. Step 6: Final answer
    x = 9,667.44

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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.