Home / 21,012.47-29,039.01-17,229.77

Finding the Fourth Proportional to 21,012.47, 29,039.01 and 17,229.77

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Solution

The fourth proportional to 21,012.47, 29,039.01 and 17,229.77 is: 23,811.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012.47 : 29,039.01 = 17,229.77 : x
  2. Step 2: Convert to fraction form
    21,012.47/29,039.01 = 17,229.77/x
  3. Step 3: Cross multiply
    21,012.47x = 29,039.01 × 17,229.77
  4. Step 4: Simplify right side
    21,012.47x = 500,335,463.33
  5. Step 5: Solve for x
    x = 500,335,463.33/21,012.47
  6. Step 6: Final answer
    x = 23,811.36

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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.