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Finding the Fourth Proportional to 13,124.56, 18,111.18 and 7,535.56

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Solution

The fourth proportional to 13,124.56, 18,111.18 and 7,535.56 is: 10,398.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.56 : 18,111.18 = 7,535.56 : x
  2. Step 2: Convert to fraction form
    13,124.56/18,111.18 = 7,535.56/x
  3. Step 3: Cross multiply
    13,124.56x = 18,111.18 × 7,535.56
  4. Step 4: Simplify right side
    13,124.56x = 136,477,883.56
  5. Step 5: Solve for x
    x = 136,477,883.56/13,124.56
  6. Step 6: Final answer
    x = 10,398.66

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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.