Home / 21,603.12-29,812.32-11,667.12

Finding the Fourth Proportional to 21,603.12, 29,812.32 and 11,667.12

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Solution

The fourth proportional to 21,603.12, 29,812.32 and 11,667.12 is: 16,100.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,603.12 : 29,812.32 = 11,667.12 : x
  2. Step 2: Convert to fraction form
    21,603.12/29,812.32 = 11,667.12/x
  3. Step 3: Cross multiply
    21,603.12x = 29,812.32 × 11,667.12
  4. Step 4: Simplify right side
    21,603.12x = 347,823,914.92
  5. Step 5: Solve for x
    x = 347,823,914.92/21,603.12
  6. Step 6: Final answer
    x = 16,100.63

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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.