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Finding the Fourth Proportional to 20,892.99, 31,342.41 and 6,102.99

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Solution

The fourth proportional to 20,892.99, 31,342.41 and 6,102.99 is: 9,155.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,892.99 : 31,342.41 = 6,102.99 : x
  2. Step 2: Convert to fraction form
    20,892.99/31,342.41 = 6,102.99/x
  3. Step 3: Cross multiply
    20,892.99x = 31,342.41 × 6,102.99
  4. Step 4: Simplify right side
    20,892.99x = 191,282,414.81
  5. Step 5: Solve for x
    x = 191,282,414.81/20,892.99
  6. Step 6: Final answer
    x = 9,155.34

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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.