Home / 13,929.30-20,861.76-8,370.38

Finding the Fourth Proportional to 13,929.30, 20,861.76 and 8,370.38

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Solution

The fourth proportional to 13,929.30, 20,861.76 and 8,370.38 is: 12,536.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.30 : 20,861.76 = 8,370.38 : x
  2. Step 2: Convert to fraction form
    13,929.30/20,861.76 = 8,370.38/x
  3. Step 3: Cross multiply
    13,929.30x = 20,861.76 × 8,370.38
  4. Step 4: Simplify right side
    13,929.30x = 174,620,858.67
  5. Step 5: Solve for x
    x = 174,620,858.67/13,929.30
  6. Step 6: Final answer
    x = 12,536.23

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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.