Home / 20,369.86-28,057.82-14,391.15

Finding the Fourth Proportional to 20,369.86, 28,057.82 and 14,391.15

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Solution

The fourth proportional to 20,369.86, 28,057.82 and 14,391.15 is: 19,822.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,369.86 : 28,057.82 = 14,391.15 : x
  2. Step 2: Convert to fraction form
    20,369.86/28,057.82 = 14,391.15/x
  3. Step 3: Cross multiply
    20,369.86x = 28,057.82 × 14,391.15
  4. Step 4: Simplify right side
    20,369.86x = 403,784,156.00
  5. Step 5: Solve for x
    x = 403,784,156.00/20,369.86
  6. Step 6: Final answer
    x = 19,822.63

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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.