Home / 13,605.23-18,765.78-11,087.35

Finding the Fourth Proportional to 13,605.23, 18,765.78 and 11,087.35

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Solution

The fourth proportional to 13,605.23, 18,765.78 and 11,087.35 is: 15,292.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.23 : 18,765.78 = 11,087.35 : x
  2. Step 2: Convert to fraction form
    13,605.23/18,765.78 = 11,087.35/x
  3. Step 3: Cross multiply
    13,605.23x = 18,765.78 × 11,087.35
  4. Step 4: Simplify right side
    13,605.23x = 208,062,682.39
  5. Step 5: Solve for x
    x = 208,062,682.39/13,605.23
  6. Step 6: Final answer
    x = 15,292.84

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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.