Home / 20,792.24-28,690.80-11,839.76

Finding the Fourth Proportional to 20,792.24, 28,690.80 and 11,839.76

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Solution

The fourth proportional to 20,792.24, 28,690.80 and 11,839.76 is: 16,337.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.24 : 28,690.80 = 11,839.76 : x
  2. Step 2: Convert to fraction form
    20,792.24/28,690.80 = 11,839.76/x
  3. Step 3: Cross multiply
    20,792.24x = 28,690.80 × 11,839.76
  4. Step 4: Simplify right side
    20,792.24x = 339,692,186.21
  5. Step 5: Solve for x
    x = 339,692,186.21/20,792.24
  6. Step 6: Final answer
    x = 16,337.45

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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.