Home / 13,869.42-19,138.29-8,204.37

Finding the Fourth Proportional to 13,869.42, 19,138.29 and 8,204.37

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Solution

The fourth proportional to 13,869.42, 19,138.29 and 8,204.37 is: 11,321.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.42 : 19,138.29 = 8,204.37 : x
  2. Step 2: Convert to fraction form
    13,869.42/19,138.29 = 8,204.37/x
  3. Step 3: Cross multiply
    13,869.42x = 19,138.29 × 8,204.37
  4. Step 4: Simplify right side
    13,869.42x = 157,017,612.33
  5. Step 5: Solve for x
    x = 157,017,612.33/13,869.42
  6. Step 6: Final answer
    x = 11,321.14

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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.