Home / 13,605.20-20,356.28-8,061.52

Finding the Fourth Proportional to 13,605.20, 20,356.28 and 8,061.52

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Solution

The fourth proportional to 13,605.20, 20,356.28 and 8,061.52 is: 12,061.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.20 : 20,356.28 = 8,061.52 : x
  2. Step 2: Convert to fraction form
    13,605.20/20,356.28 = 8,061.52/x
  3. Step 3: Cross multiply
    13,605.20x = 20,356.28 × 8,061.52
  4. Step 4: Simplify right side
    13,605.20x = 164,102,558.35
  5. Step 5: Solve for x
    x = 164,102,558.35/13,605.20
  6. Step 6: Final answer
    x = 12,061.75

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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.