Home / 21,136.23-29,161.37-12,182.54

Finding the Fourth Proportional to 21,136.23, 29,161.37 and 12,182.54

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Solution

The fourth proportional to 21,136.23, 29,161.37 and 12,182.54 is: 16,808.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.23 : 29,161.37 = 12,182.54 : x
  2. Step 2: Convert to fraction form
    21,136.23/29,161.37 = 12,182.54/x
  3. Step 3: Cross multiply
    21,136.23x = 29,161.37 × 12,182.54
  4. Step 4: Simplify right side
    21,136.23x = 355,259,441.13
  5. Step 5: Solve for x
    x = 355,259,441.13/21,136.23
  6. Step 6: Final answer
    x = 16,808.08

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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.