Home / 21,336.11-29,438.79-12,382.07

Finding the Fourth Proportional to 21,336.11, 29,438.79 and 12,382.07

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Solution

The fourth proportional to 21,336.11, 29,438.79 and 12,382.07 is: 17,084.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,336.11 : 29,438.79 = 12,382.07 : x
  2. Step 2: Convert to fraction form
    21,336.11/29,438.79 = 12,382.07/x
  3. Step 3: Cross multiply
    21,336.11x = 29,438.79 × 12,382.07
  4. Step 4: Simplify right side
    21,336.11x = 364,513,034.52
  5. Step 5: Solve for x
    x = 364,513,034.52/21,336.11
  6. Step 6: Final answer
    x = 17,084.33

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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.