Home / 21,116.92-29,141.43-11,556.62

Finding the Fourth Proportional to 21,116.92, 29,141.43 and 11,556.62

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Solution

The fourth proportional to 21,116.92, 29,141.43 and 11,556.62 is: 15,948.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,116.92 : 29,141.43 = 11,556.62 : x
  2. Step 2: Convert to fraction form
    21,116.92/29,141.43 = 11,556.62/x
  3. Step 3: Cross multiply
    21,116.92x = 29,141.43 × 11,556.62
  4. Step 4: Simplify right side
    21,116.92x = 336,776,432.77
  5. Step 5: Solve for x
    x = 336,776,432.77/21,116.92
  6. Step 6: Final answer
    x = 15,948.18

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Half scale
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Double scale
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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.