Home / 12,219.31-16,861.80-7,183.75

Finding the Fourth Proportional to 12,219.31, 16,861.80 and 7,183.75

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Solution

The fourth proportional to 12,219.31, 16,861.80 and 7,183.75 is: 9,913.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.31 : 16,861.80 = 7,183.75 : x
  2. Step 2: Convert to fraction form
    12,219.31/16,861.80 = 7,183.75/x
  3. Step 3: Cross multiply
    12,219.31x = 16,861.80 × 7,183.75
  4. Step 4: Simplify right side
    12,219.31x = 121,130,871.44
  5. Step 5: Solve for x
    x = 121,130,871.44/12,219.31
  6. Step 6: Final answer
    x = 9,913.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.