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Finding the Fourth Proportional to 20,542.51, 30,813.11 and 8,693.07

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Solution

The fourth proportional to 20,542.51, 30,813.11 and 8,693.07 is: 13,039.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,542.51 : 30,813.11 = 8,693.07 : x
  2. Step 2: Convert to fraction form
    20,542.51/30,813.11 = 8,693.07/x
  3. Step 3: Cross multiply
    20,542.51x = 30,813.11 × 8,693.07
  4. Step 4: Simplify right side
    20,542.51x = 267,860,569.06
  5. Step 5: Solve for x
    x = 267,860,569.06/20,542.51
  6. Step 6: Final answer
    x = 13,039.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.