Home / 12,210.24-16,849.68-6,621.12

Finding the Fourth Proportional to 12,210.24, 16,849.68 and 6,621.12

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Solution

The fourth proportional to 12,210.24, 16,849.68 and 6,621.12 is: 9,136.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.24 : 16,849.68 = 6,621.12 : x
  2. Step 2: Convert to fraction form
    12,210.24/16,849.68 = 6,621.12/x
  3. Step 3: Cross multiply
    12,210.24x = 16,849.68 × 6,621.12
  4. Step 4: Simplify right side
    12,210.24x = 111,563,753.24
  5. Step 5: Solve for x
    x = 111,563,753.24/12,210.24
  6. Step 6: Final answer
    x = 9,136.90

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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.