Home / 21,291.05-29,382.56-11,859.62

Finding the Fourth Proportional to 21,291.05, 29,382.56 and 11,859.62

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Solution

The fourth proportional to 21,291.05, 29,382.56 and 11,859.62 is: 16,366.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.05 : 29,382.56 = 11,859.62 : x
  2. Step 2: Convert to fraction form
    21,291.05/29,382.56 = 11,859.62/x
  3. Step 3: Cross multiply
    21,291.05x = 29,382.56 × 11,859.62
  4. Step 4: Simplify right side
    21,291.05x = 348,465,996.23
  5. Step 5: Solve for x
    x = 348,465,996.23/21,291.05
  6. Step 6: Final answer
    x = 16,366.78

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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.