Home / 21,378.73-32,077.32-11,516.04

Finding the Fourth Proportional to 21,378.73, 32,077.32 and 11,516.04

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Solution

The fourth proportional to 21,378.73, 32,077.32 and 11,516.04 is: 17,279.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,378.73 : 32,077.32 = 11,516.04 : x
  2. Step 2: Convert to fraction form
    21,378.73/32,077.32 = 11,516.04/x
  3. Step 3: Cross multiply
    21,378.73x = 32,077.32 × 11,516.04
  4. Step 4: Simplify right side
    21,378.73x = 369,403,700.21
  5. Step 5: Solve for x
    x = 369,403,700.21/21,378.73
  6. Step 6: Final answer
    x = 17,279.03

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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.