Home / 30,339.82-41,856.91-18,398.80

Finding the Fourth Proportional to 30,339.82, 41,856.91 and 18,398.80

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Solution

The fourth proportional to 30,339.82, 41,856.91 and 18,398.80 is: 25,383.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,339.82 : 41,856.91 = 18,398.80 : x
  2. Step 2: Convert to fraction form
    30,339.82/41,856.91 = 18,398.80/x
  3. Step 3: Cross multiply
    30,339.82x = 41,856.91 × 18,398.80
  4. Step 4: Simplify right side
    30,339.82x = 770,116,915.71
  5. Step 5: Solve for x
    x = 770,116,915.71/30,339.82
  6. Step 6: Final answer
    x = 25,383.04

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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.