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Finding the Fourth Proportional to 18,039.96, 24,885.96 and 12,071.88

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Solution

The fourth proportional to 18,039.96, 24,885.96 and 12,071.88 is: 16,653.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,039.96 : 24,885.96 = 12,071.88 : x
  2. Step 2: Convert to fraction form
    18,039.96/24,885.96 = 12,071.88/x
  3. Step 3: Cross multiply
    18,039.96x = 24,885.96 × 12,071.88
  4. Step 4: Simplify right side
    18,039.96x = 300,420,322.80
  5. Step 5: Solve for x
    x = 300,420,322.80/18,039.96
  6. Step 6: Final answer
    x = 16,653.05

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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.