Home / 11,385.04-17,079.80-4,811.20

Finding the Fourth Proportional to 11,385.04, 17,079.80 and 4,811.20

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Solution

The fourth proportional to 11,385.04, 17,079.80 and 4,811.20 is: 7,217.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.04 : 17,079.80 = 4,811.20 : x
  2. Step 2: Convert to fraction form
    11,385.04/17,079.80 = 4,811.20/x
  3. Step 3: Cross multiply
    11,385.04x = 17,079.80 × 4,811.20
  4. Step 4: Simplify right side
    11,385.04x = 82,174,333.76
  5. Step 5: Solve for x
    x = 82,174,333.76/11,385.04
  6. Step 6: Final answer
    x = 7,217.75

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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.