Home / 15,813.08-23,712.68-8,415.78

Finding the Fourth Proportional to 15,813.08, 23,712.68 and 8,415.78

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Solution

The fourth proportional to 15,813.08, 23,712.68 and 8,415.78 is: 12,619.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,813.08 : 23,712.68 = 8,415.78 : x
  2. Step 2: Convert to fraction form
    15,813.08/23,712.68 = 8,415.78/x
  3. Step 3: Cross multiply
    15,813.08x = 23,712.68 × 8,415.78
  4. Step 4: Simplify right side
    15,813.08x = 199,560,656.01
  5. Step 5: Solve for x
    x = 199,560,656.01/15,813.08
  6. Step 6: Final answer
    x = 12,619.98

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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.