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Finding the Fourth Proportional to 12,484.61, 18,726.98 and 4,164.60

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Solution

The fourth proportional to 12,484.61, 18,726.98 and 4,164.60 is: 6,246.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,484.61 : 18,726.98 = 4,164.60 : x
  2. Step 2: Convert to fraction form
    12,484.61/18,726.98 = 4,164.60/x
  3. Step 3: Cross multiply
    12,484.61x = 18,726.98 × 4,164.60
  4. Step 4: Simplify right side
    12,484.61x = 77,990,336.68
  5. Step 5: Solve for x
    x = 77,990,336.68/12,484.61
  6. Step 6: Final answer
    x = 6,246.92

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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.