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Finding the Fourth Proportional to 13,101.17, 18,087.68 and 9,019.94

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Solution

The fourth proportional to 13,101.17, 18,087.68 and 9,019.94 is: 12,453.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,101.17 : 18,087.68 = 9,019.94 : x
  2. Step 2: Convert to fraction form
    13,101.17/18,087.68 = 9,019.94/x
  3. Step 3: Cross multiply
    13,101.17x = 18,087.68 × 9,019.94
  4. Step 4: Simplify right side
    13,101.17x = 163,149,720.45
  5. Step 5: Solve for x
    x = 163,149,720.45/13,101.17
  6. Step 6: Final answer
    x = 12,453.07

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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.