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Finding the Fourth Proportional to 13,771.62, 19,005.03 and 7,484.13

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Solution

The fourth proportional to 13,771.62, 19,005.03 and 7,484.13 is: 10,328.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771.62 : 19,005.03 = 7,484.13 : x
  2. Step 2: Convert to fraction form
    13,771.62/19,005.03 = 7,484.13/x
  3. Step 3: Cross multiply
    13,771.62x = 19,005.03 × 7,484.13
  4. Step 4: Simplify right side
    13,771.62x = 142,236,115.17
  5. Step 5: Solve for x
    x = 142,236,115.17/13,771.62
  6. Step 6: Final answer
    x = 10,328.21

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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.