Home / 10,812.45-16,211.67-4,239.30

Finding the Fourth Proportional to 10,812.45, 16,211.67 and 4,239.30

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Solution

The fourth proportional to 10,812.45, 16,211.67 and 4,239.30 is: 6,356.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.45 : 16,211.67 = 4,239.30 : x
  2. Step 2: Convert to fraction form
    10,812.45/16,211.67 = 4,239.30/x
  3. Step 3: Cross multiply
    10,812.45x = 16,211.67 × 4,239.30
  4. Step 4: Simplify right side
    10,812.45x = 68,726,132.63
  5. Step 5: Solve for x
    x = 68,726,132.63/10,812.45
  6. Step 6: Final answer
    x = 6,356.20

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1.5x scale

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.