Home / 20,745.95-31,124.37-8,095.91

Finding the Fourth Proportional to 20,745.95, 31,124.37 and 8,095.91

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Solution

The fourth proportional to 20,745.95, 31,124.37 and 8,095.91 is: 12,145.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.95 : 31,124.37 = 8,095.91 : x
  2. Step 2: Convert to fraction form
    20,745.95/31,124.37 = 8,095.91/x
  3. Step 3: Cross multiply
    20,745.95x = 31,124.37 × 8,095.91
  4. Step 4: Simplify right side
    20,745.95x = 251,980,098.33
  5. Step 5: Solve for x
    x = 251,980,098.33/20,745.95
  6. Step 6: Final answer
    x = 12,145.99

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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.