Home / 21,062.41-29,057.47-12,107.86

Finding the Fourth Proportional to 21,062.41, 29,057.47 and 12,107.86

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Solution

The fourth proportional to 21,062.41, 29,057.47 and 12,107.86 is: 16,703.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062.41 : 29,057.47 = 12,107.86 : x
  2. Step 2: Convert to fraction form
    21,062.41/29,057.47 = 12,107.86/x
  3. Step 3: Cross multiply
    21,062.41x = 29,057.47 × 12,107.86
  4. Step 4: Simplify right side
    21,062.41x = 351,823,778.71
  5. Step 5: Solve for x
    x = 351,823,778.71/21,062.41
  6. Step 6: Final answer
    x = 16,703.87

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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.