Home / 20,710.76-31,066.13-5,919.68

Finding the Fourth Proportional to 20,710.76, 31,066.13 and 5,919.68

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Solution

The fourth proportional to 20,710.76, 31,066.13 and 5,919.68 is: 8,879.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.76 : 31,066.13 = 5,919.68 : x
  2. Step 2: Convert to fraction form
    20,710.76/31,066.13 = 5,919.68/x
  3. Step 3: Cross multiply
    20,710.76x = 31,066.13 × 5,919.68
  4. Step 4: Simplify right side
    20,710.76x = 183,901,657.54
  5. Step 5: Solve for x
    x = 183,901,657.54/20,710.76
  6. Step 6: Final answer
    x = 8,879.52

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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.