Home / 30,078.76-41,508.18-16,649.72

Finding the Fourth Proportional to 30,078.76, 41,508.18 and 16,649.72

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Solution

The fourth proportional to 30,078.76, 41,508.18 and 16,649.72 is: 22,976.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,078.76 : 41,508.18 = 16,649.72 : x
  2. Step 2: Convert to fraction form
    30,078.76/41,508.18 = 16,649.72/x
  3. Step 3: Cross multiply
    30,078.76x = 41,508.18 × 16,649.72
  4. Step 4: Simplify right side
    30,078.76x = 691,099,533.09
  5. Step 5: Solve for x
    x = 691,099,533.09/30,078.76
  6. Step 6: Final answer
    x = 22,976.33

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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.