Home / 10,388.97-15,579.81-2,991.45

Finding the Fourth Proportional to 10,388.97, 15,579.81 and 2,991.45

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Solution

The fourth proportional to 10,388.97, 15,579.81 and 2,991.45 is: 4,486.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,388.97 : 15,579.81 = 2,991.45 : x
  2. Step 2: Convert to fraction form
    10,388.97/15,579.81 = 2,991.45/x
  3. Step 3: Cross multiply
    10,388.97x = 15,579.81 × 2,991.45
  4. Step 4: Simplify right side
    10,388.97x = 46,606,222.62
  5. Step 5: Solve for x
    x = 46,606,222.62/10,388.97
  6. Step 6: Final answer
    x = 4,486.13

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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.