Home / 20,949.74-31,417.93-6,907.15

Finding the Fourth Proportional to 20,949.74, 31,417.93 and 6,907.15

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Solution

The fourth proportional to 20,949.74, 31,417.93 and 6,907.15 is: 10,358.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.74 : 31,417.93 = 6,907.15 : x
  2. Step 2: Convert to fraction form
    20,949.74/31,417.93 = 6,907.15/x
  3. Step 3: Cross multiply
    20,949.74x = 31,417.93 × 6,907.15
  4. Step 4: Simplify right side
    20,949.74x = 217,008,355.20
  5. Step 5: Solve for x
    x = 217,008,355.20/20,949.74
  6. Step 6: Final answer
    x = 10,358.52

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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.