Home / 20,732.60-31,076.72-11,828.74

Finding the Fourth Proportional to 20,732.60, 31,076.72 and 11,828.74

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Solution

The fourth proportional to 20,732.60, 31,076.72 and 11,828.74 is: 17,730.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.60 : 31,076.72 = 11,828.74 : x
  2. Step 2: Convert to fraction form
    20,732.60/31,076.72 = 11,828.74/x
  3. Step 3: Cross multiply
    20,732.60x = 31,076.72 × 11,828.74
  4. Step 4: Simplify right side
    20,732.60x = 367,598,440.93
  5. Step 5: Solve for x
    x = 367,598,440.93/20,732.60
  6. Step 6: Final answer
    x = 17,730.46

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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.