Home / 21,160.89-29,201.40-11,600.58

Finding the Fourth Proportional to 21,160.89, 29,201.40 and 11,600.58

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Solution

The fourth proportional to 21,160.89, 29,201.40 and 11,600.58 is: 16,008.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.89 : 29,201.40 = 11,600.58 : x
  2. Step 2: Convert to fraction form
    21,160.89/29,201.40 = 11,600.58/x
  3. Step 3: Cross multiply
    21,160.89x = 29,201.40 × 11,600.58
  4. Step 4: Simplify right side
    21,160.89x = 338,753,176.81
  5. Step 5: Solve for x
    x = 338,753,176.81/21,160.89
  6. Step 6: Final answer
    x = 16,008.46

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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.