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Finding the Fourth Proportional to 18,852.80, 25,995.36 and 13,530.56

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Solution

The fourth proportional to 18,852.80, 25,995.36 and 13,530.56 is: 18,656.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,852.80 : 25,995.36 = 13,530.56 : x
  2. Step 2: Convert to fraction form
    18,852.80/25,995.36 = 13,530.56/x
  3. Step 3: Cross multiply
    18,852.80x = 25,995.36 × 13,530.56
  4. Step 4: Simplify right side
    18,852.80x = 351,731,778.20
  5. Step 5: Solve for x
    x = 351,731,778.20/18,852.80
  6. Step 6: Final answer
    x = 18,656.74

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.