Home / 13,605.13-20,404.95-4,243.63

Finding the Fourth Proportional to 13,605.13, 20,404.95 and 4,243.63

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Solution

The fourth proportional to 13,605.13, 20,404.95 and 4,243.63 is: 6,364.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.13 : 20,404.95 = 4,243.63 : x
  2. Step 2: Convert to fraction form
    13,605.13/20,404.95 = 4,243.63/x
  3. Step 3: Cross multiply
    13,605.13x = 20,404.95 × 4,243.63
  4. Step 4: Simplify right side
    13,605.13x = 86,591,057.97
  5. Step 5: Solve for x
    x = 86,591,057.97/13,605.13
  6. Step 6: Final answer
    x = 6,364.59

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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.