Home / 21,556.71-29,746.53-11,995.83

Finding the Fourth Proportional to 21,556.71, 29,746.53 and 11,995.83

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Solution

The fourth proportional to 21,556.71, 29,746.53 and 11,995.83 is: 16,553.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,556.71 : 29,746.53 = 11,995.83 : x
  2. Step 2: Convert to fraction form
    21,556.71/29,746.53 = 11,995.83/x
  3. Step 3: Cross multiply
    21,556.71x = 29,746.53 × 11,995.83
  4. Step 4: Simplify right side
    21,556.71x = 356,834,316.97
  5. Step 5: Solve for x
    x = 356,834,316.97/21,556.71
  6. Step 6: Final answer
    x = 16,553.28

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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.