Home / 21,071.64-29,078.97-11,511.24

Finding the Fourth Proportional to 21,071.64, 29,078.97 and 11,511.24

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Solution

The fourth proportional to 21,071.64, 29,078.97 and 11,511.24 is: 15,885.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,071.64 : 29,078.97 = 11,511.24 : x
  2. Step 2: Convert to fraction form
    21,071.64/29,078.97 = 11,511.24/x
  3. Step 3: Cross multiply
    21,071.64x = 29,078.97 × 11,511.24
  4. Step 4: Simplify right side
    21,071.64x = 334,735,002.62
  5. Step 5: Solve for x
    x = 334,735,002.62/21,071.64
  6. Step 6: Final answer
    x = 15,885.57

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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.