Home / 20,719.59-31,076.16-11,364.21

Finding the Fourth Proportional to 20,719.59, 31,076.16 and 11,364.21

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Solution

The fourth proportional to 20,719.59, 31,076.16 and 11,364.21 is: 17,044.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.59 : 31,076.16 = 11,364.21 : x
  2. Step 2: Convert to fraction form
    20,719.59/31,076.16 = 11,364.21/x
  3. Step 3: Cross multiply
    20,719.59x = 31,076.16 × 11,364.21
  4. Step 4: Simplify right side
    20,719.59x = 353,156,008.23
  5. Step 5: Solve for x
    x = 353,156,008.23/20,719.59
  6. Step 6: Final answer
    x = 17,044.55

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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.