Home / 21,338.08-29,439.39-12,382.36

Finding the Fourth Proportional to 21,338.08, 29,439.39 and 12,382.36

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Solution

The fourth proportional to 21,338.08, 29,439.39 and 12,382.36 is: 17,083.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.08 : 29,439.39 = 12,382.36 : x
  2. Step 2: Convert to fraction form
    21,338.08/29,439.39 = 12,382.36/x
  3. Step 3: Cross multiply
    21,338.08x = 29,439.39 × 12,382.36
  4. Step 4: Simplify right side
    21,338.08x = 364,529,125.16
  5. Step 5: Solve for x
    x = 364,529,125.16/21,338.08
  6. Step 6: Final answer
    x = 17,083.50

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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.