Home / 21,177.71-29,226.44-12,796.91

Finding the Fourth Proportional to 21,177.71, 29,226.44 and 12,796.91

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Solution

The fourth proportional to 21,177.71, 29,226.44 and 12,796.91 is: 17,660.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,177.71 : 29,226.44 = 12,796.91 : x
  2. Step 2: Convert to fraction form
    21,177.71/29,226.44 = 12,796.91/x
  3. Step 3: Cross multiply
    21,177.71x = 29,226.44 × 12,796.91
  4. Step 4: Simplify right side
    21,177.71x = 374,008,008.16
  5. Step 5: Solve for x
    x = 374,008,008.16/21,177.71
  6. Step 6: Final answer
    x = 17,660.46

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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.