Home / 18,935.35-26,155.44-15,363.58

Finding the Fourth Proportional to 18,935.35, 26,155.44 and 15,363.58

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Solution

The fourth proportional to 18,935.35, 26,155.44 and 15,363.58 is: 21,221.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.35 : 26,155.44 = 15,363.58 : x
  2. Step 2: Convert to fraction form
    18,935.35/26,155.44 = 15,363.58/x
  3. Step 3: Cross multiply
    18,935.35x = 26,155.44 × 15,363.58
  4. Step 4: Simplify right side
    18,935.35x = 401,841,194.88
  5. Step 5: Solve for x
    x = 401,841,194.88/18,935.35
  6. Step 6: Final answer
    x = 21,221.75

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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.