Home / 20,705.52-31,040.08-8,234.36

Finding the Fourth Proportional to 20,705.52, 31,040.08 and 8,234.36

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Solution

The fourth proportional to 20,705.52, 31,040.08 and 8,234.36 is: 12,344.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705.52 : 31,040.08 = 8,234.36 : x
  2. Step 2: Convert to fraction form
    20,705.52/31,040.08 = 8,234.36/x
  3. Step 3: Cross multiply
    20,705.52x = 31,040.08 × 8,234.36
  4. Step 4: Simplify right side
    20,705.52x = 255,595,193.15
  5. Step 5: Solve for x
    x = 255,595,193.15/20,705.52
  6. Step 6: Final answer
    x = 12,344.30

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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.