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Finding the Fourth Proportional to 13,893.80, 19,173.06 and 7,605.80

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Solution

The fourth proportional to 13,893.80, 19,173.06 and 7,605.80 is: 10,495.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,893.80 : 19,173.06 = 7,605.80 : x
  2. Step 2: Convert to fraction form
    13,893.80/19,173.06 = 7,605.80/x
  3. Step 3: Cross multiply
    13,893.80x = 19,173.06 × 7,605.80
  4. Step 4: Simplify right side
    13,893.80x = 145,826,459.75
  5. Step 5: Solve for x
    x = 145,826,459.75/13,893.80
  6. Step 6: Final answer
    x = 10,495.79

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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.