Home / 20,551.20-28,356.24-12,051.60

Finding the Fourth Proportional to 20,551.20, 28,356.24 and 12,051.60

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Solution

The fourth proportional to 20,551.20, 28,356.24 and 12,051.60 is: 16,628.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,551.20 : 28,356.24 = 12,051.60 : x
  2. Step 2: Convert to fraction form
    20,551.20/28,356.24 = 12,051.60/x
  3. Step 3: Cross multiply
    20,551.20x = 28,356.24 × 12,051.60
  4. Step 4: Simplify right side
    20,551.20x = 341,738,061.98
  5. Step 5: Solve for x
    x = 341,738,061.98/20,551.20
  6. Step 6: Final answer
    x = 16,628.62

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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.