Home / 21,371.16-29,492.28-11,939.88

Finding the Fourth Proportional to 21,371.16, 29,492.28 and 11,939.88

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Solution

The fourth proportional to 21,371.16, 29,492.28 and 11,939.88 is: 16,477.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,371.16 : 29,492.28 = 11,939.88 : x
  2. Step 2: Convert to fraction form
    21,371.16/29,492.28 = 11,939.88/x
  3. Step 3: Cross multiply
    21,371.16x = 29,492.28 × 11,939.88
  4. Step 4: Simplify right side
    21,371.16x = 352,134,284.13
  5. Step 5: Solve for x
    x = 352,134,284.13/21,371.16
  6. Step 6: Final answer
    x = 16,477.08

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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.