Home / 13,509.75-20,259.45-6,487.77

Finding the Fourth Proportional to 13,509.75, 20,259.45 and 6,487.77

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Solution

The fourth proportional to 13,509.75, 20,259.45 and 6,487.77 is: 9,729.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,509.75 : 20,259.45 = 6,487.77 : x
  2. Step 2: Convert to fraction form
    13,509.75/20,259.45 = 6,487.77/x
  3. Step 3: Cross multiply
    13,509.75x = 20,259.45 × 6,487.77
  4. Step 4: Simplify right side
    13,509.75x = 131,438,651.93
  5. Step 5: Solve for x
    x = 131,438,651.93/13,509.75
  6. Step 6: Final answer
    x = 9,729.17

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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.