Home / 13,630.29-20,445.42-4,270.38

Finding the Fourth Proportional to 13,630.29, 20,445.42 and 4,270.38

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Solution

The fourth proportional to 13,630.29, 20,445.42 and 4,270.38 is: 6,405.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.29 : 20,445.42 = 4,270.38 : x
  2. Step 2: Convert to fraction form
    13,630.29/20,445.42 = 4,270.38/x
  3. Step 3: Cross multiply
    13,630.29x = 20,445.42 × 4,270.38
  4. Step 4: Simplify right side
    13,630.29x = 87,309,712.66
  5. Step 5: Solve for x
    x = 87,309,712.66/13,630.29
  6. Step 6: Final answer
    x = 6,405.57

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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.