Home / 12,489.02-18,727.26-4,166.12

Finding the Fourth Proportional to 12,489.02, 18,727.26 and 4,166.12

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Solution

The fourth proportional to 12,489.02, 18,727.26 and 4,166.12 is: 6,247.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.02 : 18,727.26 = 4,166.12 : x
  2. Step 2: Convert to fraction form
    12,489.02/18,727.26 = 4,166.12/x
  3. Step 3: Cross multiply
    12,489.02x = 18,727.26 × 4,166.12
  4. Step 4: Simplify right side
    12,489.02x = 78,020,012.43
  5. Step 5: Solve for x
    x = 78,020,012.43/12,489.02
  6. Step 6: Final answer
    x = 6,247.09

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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.