Home / 20,835.08-31,240.32-8,360.96

Finding the Fourth Proportional to 20,835.08, 31,240.32 and 8,360.96

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Solution

The fourth proportional to 20,835.08, 31,240.32 and 8,360.96 is: 12,536.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.08 : 31,240.32 = 8,360.96 : x
  2. Step 2: Convert to fraction form
    20,835.08/31,240.32 = 8,360.96/x
  3. Step 3: Cross multiply
    20,835.08x = 31,240.32 × 8,360.96
  4. Step 4: Simplify right side
    20,835.08x = 261,199,065.91
  5. Step 5: Solve for x
    x = 261,199,065.91/20,835.08
  6. Step 6: Final answer
    x = 12,536.50

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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.