Home / 21,151.04-29,188.68-11,719.76

Finding the Fourth Proportional to 21,151.04, 29,188.68 and 11,719.76

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Solution

The fourth proportional to 21,151.04, 29,188.68 and 11,719.76 is: 16,173.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.04 : 29,188.68 = 11,719.76 : x
  2. Step 2: Convert to fraction form
    21,151.04/29,188.68 = 11,719.76/x
  3. Step 3: Cross multiply
    21,151.04x = 29,188.68 × 11,719.76
  4. Step 4: Simplify right side
    21,151.04x = 342,084,324.32
  5. Step 5: Solve for x
    x = 342,084,324.32/21,151.04
  6. Step 6: Final answer
    x = 16,173.40

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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.