Home / 21,231.76-29,301.04-11,800.92

Finding the Fourth Proportional to 21,231.76, 29,301.04 and 11,800.92

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Solution

The fourth proportional to 21,231.76, 29,301.04 and 11,800.92 is: 16,285.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,231.76 : 29,301.04 = 11,800.92 : x
  2. Step 2: Convert to fraction form
    21,231.76/29,301.04 = 11,800.92/x
  3. Step 3: Cross multiply
    21,231.76x = 29,301.04 × 11,800.92
  4. Step 4: Simplify right side
    21,231.76x = 345,779,228.96
  5. Step 5: Solve for x
    x = 345,779,228.96/21,231.76
  6. Step 6: Final answer
    x = 16,285.94

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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.