Home / 21,739.16-29,997.51-12,177.68

Finding the Fourth Proportional to 21,739.16, 29,997.51 and 12,177.68

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Solution

The fourth proportional to 21,739.16, 29,997.51 and 12,177.68 is: 16,803.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,739.16 : 29,997.51 = 12,177.68 : x
  2. Step 2: Convert to fraction form
    21,739.16/29,997.51 = 12,177.68/x
  3. Step 3: Cross multiply
    21,739.16x = 29,997.51 × 12,177.68
  4. Step 4: Simplify right side
    21,739.16x = 365,300,077.58
  5. Step 5: Solve for x
    x = 365,300,077.58/21,739.16
  6. Step 6: Final answer
    x = 16,803.78

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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.