Home / 21,292.96-29,382.87-12,338.86

Finding the Fourth Proportional to 21,292.96, 29,382.87 and 12,338.86

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Solution

The fourth proportional to 21,292.96, 29,382.87 and 12,338.86 is: 17,026.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.96 : 29,382.87 = 12,338.86 : x
  2. Step 2: Convert to fraction form
    21,292.96/29,382.87 = 12,338.86/x
  3. Step 3: Cross multiply
    21,292.96x = 29,382.87 × 12,338.86
  4. Step 4: Simplify right side
    21,292.96x = 362,551,119.33
  5. Step 5: Solve for x
    x = 362,551,119.33/21,292.96
  6. Step 6: Final answer
    x = 17,026.81

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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.