Home / 11,315.52-16,975.16-4,742.20

Finding the Fourth Proportional to 11,315.52, 16,975.16 and 4,742.20

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Solution

The fourth proportional to 11,315.52, 16,975.16 and 4,742.20 is: 7,114.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.52 : 16,975.16 = 4,742.20 : x
  2. Step 2: Convert to fraction form
    11,315.52/16,975.16 = 4,742.20/x
  3. Step 3: Cross multiply
    11,315.52x = 16,975.16 × 4,742.20
  4. Step 4: Simplify right side
    11,315.52x = 80,499,603.75
  5. Step 5: Solve for x
    x = 80,499,603.75/11,315.52
  6. Step 6: Final answer
    x = 7,114.09

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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.