Home / 21,070.92-29,078.28-11,639.88

Finding the Fourth Proportional to 21,070.92, 29,078.28 and 11,639.88

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Solution

The fourth proportional to 21,070.92, 29,078.28 and 11,639.88 is: 16,063.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.92 : 29,078.28 = 11,639.88 : x
  2. Step 2: Convert to fraction form
    21,070.92/29,078.28 = 11,639.88/x
  3. Step 3: Cross multiply
    21,070.92x = 29,078.28 × 11,639.88
  4. Step 4: Simplify right side
    21,070.92x = 338,467,689.81
  5. Step 5: Solve for x
    x = 338,467,689.81/21,070.92
  6. Step 6: Final answer
    x = 16,063.26

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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.