Home / 31,719.87-47,590.92-19,860.12

Finding the Fourth Proportional to 31,719.87, 47,590.92 and 19,860.12

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Solution

The fourth proportional to 31,719.87, 47,590.92 and 19,860.12 is: 29,797.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,719.87 : 47,590.92 = 19,860.12 : x
  2. Step 2: Convert to fraction form
    31,719.87/47,590.92 = 19,860.12/x
  3. Step 3: Cross multiply
    31,719.87x = 47,590.92 × 19,860.12
  4. Step 4: Simplify right side
    31,719.87x = 945,161,382.11
  5. Step 5: Solve for x
    x = 945,161,382.11/31,719.87
  6. Step 6: Final answer
    x = 29,797.14

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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.