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Finding the Fourth Proportional to 13,763.66, 18,993.70 and 7,795.31

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Solution

The fourth proportional to 13,763.66, 18,993.70 and 7,795.31 is: 10,757.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,763.66 : 18,993.70 = 7,795.31 : x
  2. Step 2: Convert to fraction form
    13,763.66/18,993.70 = 7,795.31/x
  3. Step 3: Cross multiply
    13,763.66x = 18,993.70 × 7,795.31
  4. Step 4: Simplify right side
    13,763.66x = 148,061,779.55
  5. Step 5: Solve for x
    x = 148,061,779.55/13,763.66
  6. Step 6: Final answer
    x = 10,757.44

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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.