Home / 30,279.15-41,805.79-18,953.21

Finding the Fourth Proportional to 30,279.15, 41,805.79 and 18,953.21

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Solution

The fourth proportional to 30,279.15, 41,805.79 and 18,953.21 is: 26,168.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,279.15 : 41,805.79 = 18,953.21 : x
  2. Step 2: Convert to fraction form
    30,279.15/41,805.79 = 18,953.21/x
  3. Step 3: Cross multiply
    30,279.15x = 41,805.79 × 18,953.21
  4. Step 4: Simplify right side
    30,279.15x = 792,353,974.22
  5. Step 5: Solve for x
    x = 792,353,974.22/30,279.15
  6. Step 6: Final answer
    x = 26,168.30

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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.