Home / 12,688.17-19,033.16-3,921.94

Finding the Fourth Proportional to 12,688.17, 19,033.16 and 3,921.94

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Solution

The fourth proportional to 12,688.17, 19,033.16 and 3,921.94 is: 5,883.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.17 : 19,033.16 = 3,921.94 : x
  2. Step 2: Convert to fraction form
    12,688.17/19,033.16 = 3,921.94/x
  3. Step 3: Cross multiply
    12,688.17x = 19,033.16 × 3,921.94
  4. Step 4: Simplify right side
    12,688.17x = 74,646,911.53
  5. Step 5: Solve for x
    x = 74,646,911.53/12,688.17
  6. Step 6: Final answer
    x = 5,883.19

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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.