Home / 13,605.03-18,778.86-8,227.47

Finding the Fourth Proportional to 13,605.03, 18,778.86 and 8,227.47

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Solution

The fourth proportional to 13,605.03, 18,778.86 and 8,227.47 is: 11,356.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.03 : 18,778.86 = 8,227.47 : x
  2. Step 2: Convert to fraction form
    13,605.03/18,778.86 = 8,227.47/x
  3. Step 3: Cross multiply
    13,605.03x = 18,778.86 × 8,227.47
  4. Step 4: Simplify right side
    13,605.03x = 154,502,507.28
  5. Step 5: Solve for x
    x = 154,502,507.28/13,605.03
  6. Step 6: Final answer
    x = 11,356.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.