Home / 13,120.60-19,680.62-3,259.76

Finding the Fourth Proportional to 13,120.60, 19,680.62 and 3,259.76

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Solution

The fourth proportional to 13,120.60, 19,680.62 and 3,259.76 is: 4,889.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.60 : 19,680.62 = 3,259.76 : x
  2. Step 2: Convert to fraction form
    13,120.60/19,680.62 = 3,259.76/x
  3. Step 3: Cross multiply
    13,120.60x = 19,680.62 × 3,259.76
  4. Step 4: Simplify right side
    13,120.60x = 64,154,155.20
  5. Step 5: Solve for x
    x = 64,154,155.20/13,120.60
  6. Step 6: Final answer
    x = 4,889.58

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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.