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Finding the Fourth Proportional to 13,153.11, 18,151.07 and 7,184.22

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Solution

The fourth proportional to 13,153.11, 18,151.07 and 7,184.22 is: 9,914.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.11 : 18,151.07 = 7,184.22 : x
  2. Step 2: Convert to fraction form
    13,153.11/18,151.07 = 7,184.22/x
  3. Step 3: Cross multiply
    13,153.11x = 18,151.07 × 7,184.22
  4. Step 4: Simplify right side
    13,153.11x = 130,401,244.19
  5. Step 5: Solve for x
    x = 130,401,244.19/13,153.11
  6. Step 6: Final answer
    x = 9,914.10

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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.