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Finding the Fourth Proportional to 13,340.80, 20,025.60 and 7,508.80

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Solution

The fourth proportional to 13,340.80, 20,025.60 and 7,508.80 is: 11,271.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.80 : 20,025.60 = 7,508.80 : x
  2. Step 2: Convert to fraction form
    13,340.80/20,025.60 = 7,508.80/x
  3. Step 3: Cross multiply
    13,340.80x = 20,025.60 × 7,508.80
  4. Step 4: Simplify right side
    13,340.80x = 150,368,225.28
  5. Step 5: Solve for x
    x = 150,368,225.28/13,340.80
  6. Step 6: Final answer
    x = 11,271.30

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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.