Home / 10,611.90-15,913.13-3,214.58

Finding the Fourth Proportional to 10,611.90, 15,913.13 and 3,214.58

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Solution

The fourth proportional to 10,611.90, 15,913.13 and 3,214.58 is: 4,820.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,611.90 : 15,913.13 = 3,214.58 : x
  2. Step 2: Convert to fraction form
    10,611.90/15,913.13 = 3,214.58/x
  3. Step 3: Cross multiply
    10,611.90x = 15,913.13 × 3,214.58
  4. Step 4: Simplify right side
    10,611.90x = 51,153,933.80
  5. Step 5: Solve for x
    x = 51,153,933.80/10,611.90
  6. Step 6: Final answer
    x = 4,820.43

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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.