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Finding the Fourth Proportional to 13,605.00, 20,404.76 and 4,243.51

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Solution

The fourth proportional to 13,605.00, 20,404.76 and 4,243.51 is: 6,364.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.00 : 20,404.76 = 4,243.51 : x
  2. Step 2: Convert to fraction form
    13,605.00/20,404.76 = 4,243.51/x
  3. Step 3: Cross multiply
    13,605.00x = 20,404.76 × 4,243.51
  4. Step 4: Simplify right side
    13,605.00x = 86,587,716.49
  5. Step 5: Solve for x
    x = 86,587,716.49/13,605.00
  6. Step 6: Final answer
    x = 6,364.41

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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.