Home / 20,787.04-31,189.64-10,924

Finding the Fourth Proportional to 20,787.04, 31,189.64 and 10,924

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Solution

The fourth proportional to 20,787.04, 31,189.64 and 10,924 is: 16,390.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,787.04 : 31,189.64 = 10,924 : x
  2. Step 2: Convert to fraction form
    20,787.04/31,189.64 = 10,924/x
  3. Step 3: Cross multiply
    20,787.04x = 31,189.64 × 10,924
  4. Step 4: Simplify right side
    20,787.04x = 340,715,627.36
  5. Step 5: Solve for x
    x = 340,715,627.36/20,787.04
  6. Step 6: Final answer
    x = 16,390.77

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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.