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Finding the Fourth Proportional to 12,624.66, 18,939.87 and 8,934.12

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Solution

The fourth proportional to 12,624.66, 18,939.87 and 8,934.12 is: 13,403.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,624.66 : 18,939.87 = 8,934.12 : x
  2. Step 2: Convert to fraction form
    12,624.66/18,939.87 = 8,934.12/x
  3. Step 3: Cross multiply
    12,624.66x = 18,939.87 × 8,934.12
  4. Step 4: Simplify right side
    12,624.66x = 169,211,071.36
  5. Step 5: Solve for x
    x = 169,211,071.36/12,624.66
  6. Step 6: Final answer
    x = 13,403.22

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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.