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Finding the Fourth Proportional to 12,558.87, 18,837.83 and 5,065.65

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Solution

The fourth proportional to 12,558.87, 18,837.83 and 5,065.65 is: 7,598.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.87 : 18,837.83 = 5,065.65 : x
  2. Step 2: Convert to fraction form
    12,558.87/18,837.83 = 5,065.65/x
  3. Step 3: Cross multiply
    12,558.87x = 18,837.83 × 5,065.65
  4. Step 4: Simplify right side
    12,558.87x = 95,425,828.21
  5. Step 5: Solve for x
    x = 95,425,828.21/12,558.87
  6. Step 6: Final answer
    x = 7,598.28

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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.