Home / 21,132.54-29,163.36-11,572.83

Finding the Fourth Proportional to 21,132.54, 29,163.36 and 11,572.83

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Solution

The fourth proportional to 21,132.54, 29,163.36 and 11,572.83 is: 15,970.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.54 : 29,163.36 = 11,572.83 : x
  2. Step 2: Convert to fraction form
    21,132.54/29,163.36 = 11,572.83/x
  3. Step 3: Cross multiply
    21,132.54x = 29,163.36 × 11,572.83
  4. Step 4: Simplify right side
    21,132.54x = 337,502,607.51
  5. Step 5: Solve for x
    x = 337,502,607.51/21,132.54
  6. Step 6: Final answer
    x = 15,970.75

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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.