Home / 15,815.85-23,716.47-4,719.66

Finding the Fourth Proportional to 15,815.85, 23,716.47 and 4,719.66

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Solution

The fourth proportional to 15,815.85, 23,716.47 and 4,719.66 is: 7,077.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.85 : 23,716.47 = 4,719.66 : x
  2. Step 2: Convert to fraction form
    15,815.85/23,716.47 = 4,719.66/x
  3. Step 3: Cross multiply
    15,815.85x = 23,716.47 × 4,719.66
  4. Step 4: Simplify right side
    15,815.85x = 111,933,674.80
  5. Step 5: Solve for x
    x = 111,933,674.80/15,815.85
  6. Step 6: Final answer
    x = 7,077.31

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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.