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Finding the Fourth Proportional to 11,503.40, 17,255.10 and 4,111.40

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Solution

The fourth proportional to 11,503.40, 17,255.10 and 4,111.40 is: 6,167.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,503.40 : 17,255.10 = 4,111.40 : x
  2. Step 2: Convert to fraction form
    11,503.40/17,255.10 = 4,111.40/x
  3. Step 3: Cross multiply
    11,503.40x = 17,255.10 × 4,111.40
  4. Step 4: Simplify right side
    11,503.40x = 70,942,618.14
  5. Step 5: Solve for x
    x = 70,942,618.14/11,503.40
  6. Step 6: Final answer
    x = 6,167.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.