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Finding the Fourth Proportional to 13,806, 20,712.30 and 4,572

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Solution

The fourth proportional to 13,806, 20,712.30 and 4,572 is: 6,859.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,806 : 20,712.30 = 4,572 : x
  2. Step 2: Convert to fraction form
    13,806/20,712.30 = 4,572/x
  3. Step 3: Cross multiply
    13,806x = 20,712.30 × 4,572
  4. Step 4: Simplify right side
    13,806x = 94,696,635.60
  5. Step 5: Solve for x
    x = 94,696,635.60/13,806
  6. Step 6: Final answer
    x = 6,859.09

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