Home / 25,665.86-38,502.30-12,509.12

Finding the Fourth Proportional to 25,665.86, 38,502.30 and 12,509.12

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Solution

The fourth proportional to 25,665.86, 38,502.30 and 12,509.12 is: 18,765.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,665.86 : 38,502.30 = 12,509.12 : x
  2. Step 2: Convert to fraction form
    25,665.86/38,502.30 = 12,509.12/x
  3. Step 3: Cross multiply
    25,665.86x = 38,502.30 × 12,509.12
  4. Step 4: Simplify right side
    25,665.86x = 481,629,890.98
  5. Step 5: Solve for x
    x = 481,629,890.98/25,665.86
  6. Step 6: Final answer
    x = 18,765.39

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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.