Home / 22,579.92-31,146.44-13,621.68

Finding the Fourth Proportional to 22,579.92, 31,146.44 and 13,621.68

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Solution

The fourth proportional to 22,579.92, 31,146.44 and 13,621.68 is: 18,789.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,579.92 : 31,146.44 = 13,621.68 : x
  2. Step 2: Convert to fraction form
    22,579.92/31,146.44 = 13,621.68/x
  3. Step 3: Cross multiply
    22,579.92x = 31,146.44 × 13,621.68
  4. Step 4: Simplify right side
    22,579.92x = 424,266,838.82
  5. Step 5: Solve for x
    x = 424,266,838.82/22,579.92
  6. Step 6: Final answer
    x = 18,789.56

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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.