Home / 19,943.70-27,520.81-10,991.24

Finding the Fourth Proportional to 19,943.70, 27,520.81 and 10,991.24

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Solution

The fourth proportional to 19,943.70, 27,520.81 and 10,991.24 is: 15,167.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,943.70 : 27,520.81 = 10,991.24 : x
  2. Step 2: Convert to fraction form
    19,943.70/27,520.81 = 10,991.24/x
  3. Step 3: Cross multiply
    19,943.70x = 27,520.81 × 10,991.24
  4. Step 4: Simplify right side
    19,943.70x = 302,487,869.03
  5. Step 5: Solve for x
    x = 302,487,869.03/19,943.70
  6. Step 6: Final answer
    x = 15,167.09

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1.5x scale

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.