Home / 20,211.72-27,690.19-19,454.17

Finding the Fourth Proportional to 20,211.72, 27,690.19 and 19,454.17

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Solution

The fourth proportional to 20,211.72, 27,690.19 and 19,454.17 is: 26,652.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.72 : 27,690.19 = 19,454.17 : x
  2. Step 2: Convert to fraction form
    20,211.72/27,690.19 = 19,454.17/x
  3. Step 3: Cross multiply
    20,211.72x = 27,690.19 × 19,454.17
  4. Step 4: Simplify right side
    20,211.72x = 538,689,427.87
  5. Step 5: Solve for x
    x = 538,689,427.87/20,211.72
  6. Step 6: Final answer
    x = 26,652.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.