Home / 21,071.22-29,079.45-11,639.58

Finding the Fourth Proportional to 21,071.22, 29,079.45 and 11,639.58

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Solution

The fourth proportional to 21,071.22, 29,079.45 and 11,639.58 is: 16,063.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,071.22 : 29,079.45 = 11,639.58 : x
  2. Step 2: Convert to fraction form
    21,071.22/29,079.45 = 11,639.58/x
  3. Step 3: Cross multiply
    21,071.22x = 29,079.45 × 11,639.58
  4. Step 4: Simplify right side
    21,071.22x = 338,472,584.63
  5. Step 5: Solve for x
    x = 338,472,584.63/21,071.22
  6. Step 6: Final answer
    x = 16,063.26

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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.