Home / 12,643.44-18,869.01-11,242.21

Finding the Fourth Proportional to 12,643.44, 18,869.01 and 11,242.21

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Solution

The fourth proportional to 12,643.44, 18,869.01 and 11,242.21 is: 16,777.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,643.44 : 18,869.01 = 11,242.21 : x
  2. Step 2: Convert to fraction form
    12,643.44/18,869.01 = 11,242.21/x
  3. Step 3: Cross multiply
    12,643.44x = 18,869.01 × 11,242.21
  4. Step 4: Simplify right side
    12,643.44x = 212,129,372.91
  5. Step 5: Solve for x
    x = 212,129,372.91/12,643.44
  6. Step 6: Final answer
    x = 16,777.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.