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Finding the Fourth Proportional to 14,406.50, 19,880.98 and 8,119.10

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Solution

The fourth proportional to 14,406.50, 19,880.98 and 8,119.10 is: 11,204.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,406.50 : 19,880.98 = 8,119.10 : x
  2. Step 2: Convert to fraction form
    14,406.50/19,880.98 = 8,119.10/x
  3. Step 3: Cross multiply
    14,406.50x = 19,880.98 × 8,119.10
  4. Step 4: Simplify right side
    14,406.50x = 161,415,664.72
  5. Step 5: Solve for x
    x = 161,415,664.72/14,406.50
  6. Step 6: Final answer
    x = 11,204.36

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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.