Home / 30,188.66-41,665.12-28,859.72

Finding the Fourth Proportional to 30,188.66, 41,665.12 and 28,859.72

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Solution

The fourth proportional to 30,188.66, 41,665.12 and 28,859.72 is: 39,830.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,188.66 : 41,665.12 = 28,859.72 : x
  2. Step 2: Convert to fraction form
    30,188.66/41,665.12 = 28,859.72/x
  3. Step 3: Cross multiply
    30,188.66x = 41,665.12 × 28,859.72
  4. Step 4: Simplify right side
    30,188.66x = 1,202,443,416.49
  5. Step 5: Solve for x
    x = 1,202,443,416.49/30,188.66
  6. Step 6: Final answer
    x = 39,830.97

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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.