Home / 21,678.36-29,919.94-12,606.52

Finding the Fourth Proportional to 21,678.36, 29,919.94 and 12,606.52

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Solution

The fourth proportional to 21,678.36, 29,919.94 and 12,606.52 is: 17,399.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,678.36 : 29,919.94 = 12,606.52 : x
  2. Step 2: Convert to fraction form
    21,678.36/29,919.94 = 12,606.52/x
  3. Step 3: Cross multiply
    21,678.36x = 29,919.94 × 12,606.52
  4. Step 4: Simplify right side
    21,678.36x = 377,186,322.01
  5. Step 5: Solve for x
    x = 377,186,322.01/21,678.36
  6. Step 6: Final answer
    x = 17,399.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.