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Finding the Fourth Proportional to 12,609.66, 18,916.65 and 3,842.46

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Solution

The fourth proportional to 12,609.66, 18,916.65 and 3,842.46 is: 5,764.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,609.66 : 18,916.65 = 3,842.46 : x
  2. Step 2: Convert to fraction form
    12,609.66/18,916.65 = 3,842.46/x
  3. Step 3: Cross multiply
    12,609.66x = 18,916.65 × 3,842.46
  4. Step 4: Simplify right side
    12,609.66x = 72,686,470.96
  5. Step 5: Solve for x
    x = 72,686,470.96/12,609.66
  6. Step 6: Final answer
    x = 5,764.35

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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.