Home / 21,284.91-29,374.52-11,853.54

Finding the Fourth Proportional to 21,284.91, 29,374.52 and 11,853.54

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Solution

The fourth proportional to 21,284.91, 29,374.52 and 11,853.54 is: 16,358.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284.91 : 29,374.52 = 11,853.54 : x
  2. Step 2: Convert to fraction form
    21,284.91/29,374.52 = 11,853.54/x
  3. Step 3: Cross multiply
    21,284.91x = 29,374.52 × 11,853.54
  4. Step 4: Simplify right side
    21,284.91x = 348,191,988.53
  5. Step 5: Solve for x
    x = 348,191,988.53/21,284.91
  6. Step 6: Final answer
    x = 16,358.63

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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.