Home / 21,766.46-32,657.80-12,400.70

Finding the Fourth Proportional to 21,766.46, 32,657.80 and 12,400.70

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Solution

The fourth proportional to 21,766.46, 32,657.80 and 12,400.70 is: 18,605.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,766.46 : 32,657.80 = 12,400.70 : x
  2. Step 2: Convert to fraction form
    21,766.46/32,657.80 = 12,400.70/x
  3. Step 3: Cross multiply
    21,766.46x = 32,657.80 × 12,400.70
  4. Step 4: Simplify right side
    21,766.46x = 404,979,580.46
  5. Step 5: Solve for x
    x = 404,979,580.46/21,766.46
  6. Step 6: Final answer
    x = 18,605.67

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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.