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Finding the Fourth Proportional to 14,119.45, 19,485 and 8,817.35

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Solution

The fourth proportional to 14,119.45, 19,485 and 8,817.35 is: 12,168.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,119.45 : 19,485 = 8,817.35 : x
  2. Step 2: Convert to fraction form
    14,119.45/19,485 = 8,817.35/x
  3. Step 3: Cross multiply
    14,119.45x = 19,485 × 8,817.35
  4. Step 4: Simplify right side
    14,119.45x = 171,805,967.33
  5. Step 5: Solve for x
    x = 171,805,967.33/14,119.45
  6. Step 6: Final answer
    x = 12,168.04

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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.