Home / 10,480.20-15,719.04-2,688.48

Finding the Fourth Proportional to 10,480.20, 15,719.04 and 2,688.48

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Solution

The fourth proportional to 10,480.20, 15,719.04 and 2,688.48 is: 4,032.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,480.20 : 15,719.04 = 2,688.48 : x
  2. Step 2: Convert to fraction form
    10,480.20/15,719.04 = 2,688.48/x
  3. Step 3: Cross multiply
    10,480.20x = 15,719.04 × 2,688.48
  4. Step 4: Simplify right side
    10,480.20x = 42,260,324.66
  5. Step 5: Solve for x
    x = 42,260,324.66/10,480.20
  6. Step 6: Final answer
    x = 4,032.40

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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.