Home / 12,142.98-18,216.09-4,350.78

Finding the Fourth Proportional to 12,142.98, 18,216.09 and 4,350.78

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Solution

The fourth proportional to 12,142.98, 18,216.09 and 4,350.78 is: 6,526.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,142.98 : 18,216.09 = 4,350.78 : x
  2. Step 2: Convert to fraction form
    12,142.98/18,216.09 = 4,350.78/x
  3. Step 3: Cross multiply
    12,142.98x = 18,216.09 × 4,350.78
  4. Step 4: Simplify right side
    12,142.98x = 79,254,200.05
  5. Step 5: Solve for x
    x = 79,254,200.05/12,142.98
  6. Step 6: Final answer
    x = 6,526.75

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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.