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Finding the Fourth Proportional to 20,802.83, 28,708.83 and 11,851.11

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Solution

The fourth proportional to 20,802.83, 28,708.83 and 11,851.11 is: 16,355.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.83 : 28,708.83 = 11,851.11 : x
  2. Step 2: Convert to fraction form
    20,802.83/28,708.83 = 11,851.11/x
  3. Step 3: Cross multiply
    20,802.83x = 28,708.83 × 11,851.11
  4. Step 4: Simplify right side
    20,802.83x = 340,231,502.30
  5. Step 5: Solve for x
    x = 340,231,502.30/20,802.83
  6. Step 6: Final answer
    x = 16,355.06

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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.