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Finding the Fourth Proportional to 13,133.53, 18,115.27 and 7,824.25

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Solution

The fourth proportional to 13,133.53, 18,115.27 and 7,824.25 is: 10,792.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.53 : 18,115.27 = 7,824.25 : x
  2. Step 2: Convert to fraction form
    13,133.53/18,115.27 = 7,824.25/x
  3. Step 3: Cross multiply
    13,133.53x = 18,115.27 × 7,824.25
  4. Step 4: Simplify right side
    13,133.53x = 141,738,401.30
  5. Step 5: Solve for x
    x = 141,738,401.30/13,133.53
  6. Step 6: Final answer
    x = 10,792.10

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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.