Home / 10,455.68-15,688.32-3,887.36

Finding the Fourth Proportional to 10,455.68, 15,688.32 and 3,887.36

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Solution

The fourth proportional to 10,455.68, 15,688.32 and 3,887.36 is: 5,832.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,455.68 : 15,688.32 = 3,887.36 : x
  2. Step 2: Convert to fraction form
    10,455.68/15,688.32 = 3,887.36/x
  3. Step 3: Cross multiply
    10,455.68x = 15,688.32 × 3,887.36
  4. Step 4: Simplify right side
    10,455.68x = 60,986,147.64
  5. Step 5: Solve for x
    x = 60,986,147.64/10,455.68
  6. Step 6: Final answer
    x = 5,832.82

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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.