Home / 13,127.64-19,688.10-3,891.48

Finding the Fourth Proportional to 13,127.64, 19,688.10 and 3,891.48

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Solution

The fourth proportional to 13,127.64, 19,688.10 and 3,891.48 is: 5,836.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,127.64 : 19,688.10 = 3,891.48 : x
  2. Step 2: Convert to fraction form
    13,127.64/19,688.10 = 3,891.48/x
  3. Step 3: Cross multiply
    13,127.64x = 19,688.10 × 3,891.48
  4. Step 4: Simplify right side
    13,127.64x = 76,615,847.39
  5. Step 5: Solve for x
    x = 76,615,847.39/13,127.64
  6. Step 6: Final answer
    x = 5,836.22

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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.