Home / 21,542.45-29,728.49-12,111.08

Finding the Fourth Proportional to 21,542.45, 29,728.49 and 12,111.08

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Solution

The fourth proportional to 21,542.45, 29,728.49 and 12,111.08 is: 16,713.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,542.45 : 29,728.49 = 12,111.08 : x
  2. Step 2: Convert to fraction form
    21,542.45/29,728.49 = 12,111.08/x
  3. Step 3: Cross multiply
    21,542.45x = 29,728.49 × 12,111.08
  4. Step 4: Simplify right side
    21,542.45x = 360,043,911.47
  5. Step 5: Solve for x
    x = 360,043,911.47/21,542.45
  6. Step 6: Final answer
    x = 16,713.23

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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.