Home / 21,161.06-29,196.47-13,204.56

Finding the Fourth Proportional to 21,161.06, 29,196.47 and 13,204.56

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Solution

The fourth proportional to 21,161.06, 29,196.47 and 13,204.56 is: 18,218.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.06 : 29,196.47 = 13,204.56 : x
  2. Step 2: Convert to fraction form
    21,161.06/29,196.47 = 13,204.56/x
  3. Step 3: Cross multiply
    21,161.06x = 29,196.47 × 13,204.56
  4. Step 4: Simplify right side
    21,161.06x = 385,526,572.91
  5. Step 5: Solve for x
    x = 385,526,572.91/21,161.06
  6. Step 6: Final answer
    x = 18,218.68

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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.