Home / 21,071.16-29,078.30-11,511.18

Finding the Fourth Proportional to 21,071.16, 29,078.30 and 11,511.18

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Solution

The fourth proportional to 21,071.16, 29,078.30 and 11,511.18 is: 15,885.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,071.16 : 29,078.30 = 11,511.18 : x
  2. Step 2: Convert to fraction form
    21,071.16/29,078.30 = 11,511.18/x
  3. Step 3: Cross multiply
    21,071.16x = 29,078.30 × 11,511.18
  4. Step 4: Simplify right side
    21,071.16x = 334,725,545.39
  5. Step 5: Solve for x
    x = 334,725,545.39/21,071.16
  6. Step 6: Final answer
    x = 15,885.48

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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.