Home / 21,542.09-29,730.92-12,112.47

Finding the Fourth Proportional to 21,542.09, 29,730.92 and 12,112.47

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Solution

The fourth proportional to 21,542.09, 29,730.92 and 12,112.47 is: 16,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,542.09 : 29,730.92 = 12,112.47 : x
  2. Step 2: Convert to fraction form
    21,542.09/29,730.92 = 12,112.47/x
  3. Step 3: Cross multiply
    21,542.09x = 29,730.92 × 12,112.47
  4. Step 4: Simplify right side
    21,542.09x = 360,114,816.01
  5. Step 5: Solve for x
    x = 360,114,816.01/21,542.09
  6. Step 6: Final answer
    x = 16,716.80

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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.