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Finding the Fourth Proportional to 10,643.58, 15,957.57 and 3,621.71

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Solution

The fourth proportional to 10,643.58, 15,957.57 and 3,621.71 is: 5,429.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,643.58 : 15,957.57 = 3,621.71 : x
  2. Step 2: Convert to fraction form
    10,643.58/15,957.57 = 3,621.71/x
  3. Step 3: Cross multiply
    10,643.58x = 15,957.57 × 3,621.71
  4. Step 4: Simplify right side
    10,643.58x = 57,793,622.33
  5. Step 5: Solve for x
    x = 57,793,622.33/10,643.58
  6. Step 6: Final answer
    x = 5,429.90

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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.