Home / 21,345.13-32,017.66-11,863.48

Finding the Fourth Proportional to 21,345.13, 32,017.66 and 11,863.48

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Solution

The fourth proportional to 21,345.13, 32,017.66 and 11,863.48 is: 17,795.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,345.13 : 32,017.66 = 11,863.48 : x
  2. Step 2: Convert to fraction form
    21,345.13/32,017.66 = 11,863.48/x
  3. Step 3: Cross multiply
    21,345.13x = 32,017.66 × 11,863.48
  4. Step 4: Simplify right side
    21,345.13x = 379,840,869.06
  5. Step 5: Solve for x
    x = 379,840,869.06/21,345.13
  6. Step 6: Final answer
    x = 17,795.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.