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Finding the Fourth Proportional to 12,612.59, 18,918.19 and 3,846.81

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Solution

The fourth proportional to 12,612.59, 18,918.19 and 3,846.81 is: 5,770.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.59 : 18,918.19 = 3,846.81 : x
  2. Step 2: Convert to fraction form
    12,612.59/18,918.19 = 3,846.81/x
  3. Step 3: Cross multiply
    12,612.59x = 18,918.19 × 3,846.81
  4. Step 4: Simplify right side
    12,612.59x = 72,774,682.47
  5. Step 5: Solve for x
    x = 72,774,682.47/12,612.59
  6. Step 6: Final answer
    x = 5,770.00

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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.