Home / 21,382.08-29,508.56-11,951.36

Finding the Fourth Proportional to 21,382.08, 29,508.56 and 11,951.36

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Solution

The fourth proportional to 21,382.08, 29,508.56 and 11,951.36 is: 16,493.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,382.08 : 29,508.56 = 11,951.36 : x
  2. Step 2: Convert to fraction form
    21,382.08/29,508.56 = 11,951.36/x
  3. Step 3: Cross multiply
    21,382.08x = 29,508.56 × 11,951.36
  4. Step 4: Simplify right side
    21,382.08x = 352,667,423.64
  5. Step 5: Solve for x
    x = 352,667,423.64/21,382.08
  6. Step 6: Final answer
    x = 16,493.60

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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.