Home / 10,621.12-15,928-3,694.08

Finding the Fourth Proportional to 10,621.12, 15,928 and 3,694.08

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Solution

The fourth proportional to 10,621.12, 15,928 and 3,694.08 is: 5,539.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.12 : 15,928 = 3,694.08 : x
  2. Step 2: Convert to fraction form
    10,621.12/15,928 = 3,694.08/x
  3. Step 3: Cross multiply
    10,621.12x = 15,928 × 3,694.08
  4. Step 4: Simplify right side
    10,621.12x = 58,839,306.24
  5. Step 5: Solve for x
    x = 58,839,306.24/10,621.12
  6. Step 6: Final answer
    x = 5,539.84

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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.