Home / 20,792.16-28,689.86-11,839.84

Finding the Fourth Proportional to 20,792.16, 28,689.86 and 11,839.84

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Solution

The fourth proportional to 20,792.16, 28,689.86 and 11,839.84 is: 16,337.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.16 : 28,689.86 = 11,839.84 : x
  2. Step 2: Convert to fraction form
    20,792.16/28,689.86 = 11,839.84/x
  3. Step 3: Cross multiply
    20,792.16x = 28,689.86 × 11,839.84
  4. Step 4: Simplify right side
    20,792.16x = 339,683,309.90
  5. Step 5: Solve for x
    x = 339,683,309.90/20,792.16
  6. Step 6: Final answer
    x = 16,337.09

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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.