Home / 10,639.81-15,959.12-4,714.99

Finding the Fourth Proportional to 10,639.81, 15,959.12 and 4,714.99

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Solution

The fourth proportional to 10,639.81, 15,959.12 and 4,714.99 is: 7,072.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.81 : 15,959.12 = 4,714.99 : x
  2. Step 2: Convert to fraction form
    10,639.81/15,959.12 = 4,714.99/x
  3. Step 3: Cross multiply
    10,639.81x = 15,959.12 × 4,714.99
  4. Step 4: Simplify right side
    10,639.81x = 75,247,067.63
  5. Step 5: Solve for x
    x = 75,247,067.63/10,639.81
  6. Step 6: Final answer
    x = 7,072.22

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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.