Home / 20,792.90-28,697.69-11,839.16

Finding the Fourth Proportional to 20,792.90, 28,697.69 and 11,839.16

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Solution

The fourth proportional to 20,792.90, 28,697.69 and 11,839.16 is: 16,340.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.90 : 28,697.69 = 11,839.16 : x
  2. Step 2: Convert to fraction form
    20,792.90/28,697.69 = 11,839.16/x
  3. Step 3: Cross multiply
    20,792.90x = 28,697.69 × 11,839.16
  4. Step 4: Simplify right side
    20,792.90x = 339,756,484.34
  5. Step 5: Solve for x
    x = 339,756,484.34/20,792.90
  6. Step 6: Final answer
    x = 16,340.02

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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.