Home / 21,213.23-31,815.68-6,418.67

Finding the Fourth Proportional to 21,213.23, 31,815.68 and 6,418.67

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Solution

The fourth proportional to 21,213.23, 31,815.68 and 6,418.67 is: 9,626.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.23 : 31,815.68 = 6,418.67 : x
  2. Step 2: Convert to fraction form
    21,213.23/31,815.68 = 6,418.67/x
  3. Step 3: Cross multiply
    21,213.23x = 31,815.68 × 6,418.67
  4. Step 4: Simplify right side
    21,213.23x = 204,214,159.57
  5. Step 5: Solve for x
    x = 204,214,159.57/21,213.23
  6. Step 6: Final answer
    x = 9,626.74

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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.