Home / 21,732.39-29,991.33-12,300.75

Finding the Fourth Proportional to 21,732.39, 29,991.33 and 12,300.75

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Solution

The fourth proportional to 21,732.39, 29,991.33 and 12,300.75 is: 16,975.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,732.39 : 29,991.33 = 12,300.75 : x
  2. Step 2: Convert to fraction form
    21,732.39/29,991.33 = 12,300.75/x
  3. Step 3: Cross multiply
    21,732.39x = 29,991.33 × 12,300.75
  4. Step 4: Simplify right side
    21,732.39x = 368,915,852.50
  5. Step 5: Solve for x
    x = 368,915,852.50/21,732.39
  6. Step 6: Final answer
    x = 16,975.39

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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.