Home / 21,288.15-31,951.94-10,765.62

Finding the Fourth Proportional to 21,288.15, 31,951.94 and 10,765.62

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Solution

The fourth proportional to 21,288.15, 31,951.94 and 10,765.62 is: 16,158.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.15 : 31,951.94 = 10,765.62 : x
  2. Step 2: Convert to fraction form
    21,288.15/31,951.94 = 10,765.62/x
  3. Step 3: Cross multiply
    21,288.15x = 31,951.94 × 10,765.62
  4. Step 4: Simplify right side
    21,288.15x = 343,982,390.47
  5. Step 5: Solve for x
    x = 343,982,390.47/21,288.15
  6. Step 6: Final answer
    x = 16,158.40

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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.