Home / 21,376.14-29,498.07-11,815.66

Finding the Fourth Proportional to 21,376.14, 29,498.07 and 11,815.66

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Solution

The fourth proportional to 21,376.14, 29,498.07 and 11,815.66 is: 16,305.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,376.14 : 29,498.07 = 11,815.66 : x
  2. Step 2: Convert to fraction form
    21,376.14/29,498.07 = 11,815.66/x
  3. Step 3: Cross multiply
    21,376.14x = 29,498.07 × 11,815.66
  4. Step 4: Simplify right side
    21,376.14x = 348,539,245.08
  5. Step 5: Solve for x
    x = 348,539,245.08/21,376.14
  6. Step 6: Final answer
    x = 16,305.06

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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.