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Finding the Fourth Proportional to 34,792.80, 48,007.80 and 20,644.80

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Solution

The fourth proportional to 34,792.80, 48,007.80 and 20,644.80 is: 28,486.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,792.80 : 48,007.80 = 20,644.80 : x
  2. Step 2: Convert to fraction form
    34,792.80/48,007.80 = 20,644.80/x
  3. Step 3: Cross multiply
    34,792.80x = 48,007.80 × 20,644.80
  4. Step 4: Simplify right side
    34,792.80x = 991,111,429.44
  5. Step 5: Solve for x
    x = 991,111,429.44/34,792.80
  6. Step 6: Final answer
    x = 28,486.11

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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.