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Finding the Fourth Proportional to 20,370.50, 30,555.93 and 8,058.50

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Solution

The fourth proportional to 20,370.50, 30,555.93 and 8,058.50 is: 12,087.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,370.50 : 30,555.93 = 8,058.50 : x
  2. Step 2: Convert to fraction form
    20,370.50/30,555.93 = 8,058.50/x
  3. Step 3: Cross multiply
    20,370.50x = 30,555.93 × 8,058.50
  4. Step 4: Simplify right side
    20,370.50x = 246,234,961.91
  5. Step 5: Solve for x
    x = 246,234,961.91/20,370.50
  6. Step 6: Final answer
    x = 12,087.82

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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.