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Finding the Fourth Proportional to 12,609.60, 18,913.06 and 5,589.73

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Solution

The fourth proportional to 12,609.60, 18,913.06 and 5,589.73 is: 8,384.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,609.60 : 18,913.06 = 5,589.73 : x
  2. Step 2: Convert to fraction form
    12,609.60/18,913.06 = 5,589.73/x
  3. Step 3: Cross multiply
    12,609.60x = 18,913.06 × 5,589.73
  4. Step 4: Simplify right side
    12,609.60x = 105,718,898.87
  5. Step 5: Solve for x
    x = 105,718,898.87/12,609.60
  6. Step 6: Final answer
    x = 8,384.00

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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.