Home / 21,141.29-29,175.33-11,581.01

Finding the Fourth Proportional to 21,141.29, 29,175.33 and 11,581.01

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Solution

The fourth proportional to 21,141.29, 29,175.33 and 11,581.01 is: 15,981.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141.29 : 29,175.33 = 11,581.01 : x
  2. Step 2: Convert to fraction form
    21,141.29/29,175.33 = 11,581.01/x
  3. Step 3: Cross multiply
    21,141.29x = 29,175.33 × 11,581.01
  4. Step 4: Simplify right side
    21,141.29x = 337,879,730.58
  5. Step 5: Solve for x
    x = 337,879,730.58/21,141.29
  6. Step 6: Final answer
    x = 15,981.98

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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.