Home / 10,621.84-15,932.48-5,079.12

Finding the Fourth Proportional to 10,621.84, 15,932.48 and 5,079.12

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Solution

The fourth proportional to 10,621.84, 15,932.48 and 5,079.12 is: 7,618.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.84 : 15,932.48 = 5,079.12 : x
  2. Step 2: Convert to fraction form
    10,621.84/15,932.48 = 5,079.12/x
  3. Step 3: Cross multiply
    10,621.84x = 15,932.48 × 5,079.12
  4. Step 4: Simplify right side
    10,621.84x = 80,922,977.82
  5. Step 5: Solve for x
    x = 80,922,977.82/10,621.84
  6. Step 6: Final answer
    x = 7,618.55

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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.