Home / 21,382.05-29,506.71-11,951.49

Finding the Fourth Proportional to 21,382.05, 29,506.71 and 11,951.49

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Solution

The fourth proportional to 21,382.05, 29,506.71 and 11,951.49 is: 16,492.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,382.05 : 29,506.71 = 11,951.49 : x
  2. Step 2: Convert to fraction form
    21,382.05/29,506.71 = 11,951.49/x
  3. Step 3: Cross multiply
    21,382.05x = 29,506.71 × 11,951.49
  4. Step 4: Simplify right side
    21,382.05x = 352,649,031.84
  5. Step 5: Solve for x
    x = 352,649,031.84/21,382.05
  6. Step 6: Final answer
    x = 16,492.76

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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.