Home / 19,611.47-29,400.62-8,509.76

Finding the Fourth Proportional to 19,611.47, 29,400.62 and 8,509.76

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Solution

The fourth proportional to 19,611.47, 29,400.62 and 8,509.76 is: 12,757.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,611.47 : 29,400.62 = 8,509.76 : x
  2. Step 2: Convert to fraction form
    19,611.47/29,400.62 = 8,509.76/x
  3. Step 3: Cross multiply
    19,611.47x = 29,400.62 × 8,509.76
  4. Step 4: Simplify right side
    19,611.47x = 250,192,188.62
  5. Step 5: Solve for x
    x = 250,192,188.62/19,611.47
  6. Step 6: Final answer
    x = 12,757.44

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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.