Home / 11,145.50-16,719.06-4,220

Finding the Fourth Proportional to 11,145.50, 16,719.06 and 4,220

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Solution

The fourth proportional to 11,145.50, 16,719.06 and 4,220 is: 6,330.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,145.50 : 16,719.06 = 4,220 : x
  2. Step 2: Convert to fraction form
    11,145.50/16,719.06 = 4,220/x
  3. Step 3: Cross multiply
    11,145.50x = 16,719.06 × 4,220
  4. Step 4: Simplify right side
    11,145.50x = 70,554,433.20
  5. Step 5: Solve for x
    x = 70,554,433.20/11,145.50
  6. Step 6: Final answer
    x = 6,330.31

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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.