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Finding the Fourth Proportional to 25,279.92, 37,890.35 and 19,019.82

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Solution

The fourth proportional to 25,279.92, 37,890.35 and 19,019.82 is: 28,507.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,279.92 : 37,890.35 = 19,019.82 : x
  2. Step 2: Convert to fraction form
    25,279.92/37,890.35 = 19,019.82/x
  3. Step 3: Cross multiply
    25,279.92x = 37,890.35 × 19,019.82
  4. Step 4: Simplify right side
    25,279.92x = 720,667,399.74
  5. Step 5: Solve for x
    x = 720,667,399.74/25,279.92
  6. Step 6: Final answer
    x = 28,507.51

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1.5x scale

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.