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Finding the Fourth Proportional to 12,572.61, 18,859.02 and 4,252.66

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Solution

The fourth proportional to 12,572.61, 18,859.02 and 4,252.66 is: 6,379.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,572.61 : 18,859.02 = 4,252.66 : x
  2. Step 2: Convert to fraction form
    12,572.61/18,859.02 = 4,252.66/x
  3. Step 3: Cross multiply
    12,572.61x = 18,859.02 × 4,252.66
  4. Step 4: Simplify right side
    12,572.61x = 80,200,999.99
  5. Step 5: Solve for x
    x = 80,200,999.99/12,572.61
  6. Step 6: Final answer
    x = 6,379.03

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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.