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Finding the Fourth Proportional to 14,173.79, 19,559.42 and 8,205.55

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Solution

The fourth proportional to 14,173.79, 19,559.42 and 8,205.55 is: 11,323.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,173.79 : 19,559.42 = 8,205.55 : x
  2. Step 2: Convert to fraction form
    14,173.79/19,559.42 = 8,205.55/x
  3. Step 3: Cross multiply
    14,173.79x = 19,559.42 × 8,205.55
  4. Step 4: Simplify right side
    14,173.79x = 160,495,895.80
  5. Step 5: Solve for x
    x = 160,495,895.80/14,173.79
  6. Step 6: Final answer
    x = 11,323.43

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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.