Home / 12,268.96-18,396.40-5,688.72

Finding the Fourth Proportional to 12,268.96, 18,396.40 and 5,688.72

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Solution

The fourth proportional to 12,268.96, 18,396.40 and 5,688.72 is: 8,529.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,268.96 : 18,396.40 = 5,688.72 : x
  2. Step 2: Convert to fraction form
    12,268.96/18,396.40 = 5,688.72/x
  3. Step 3: Cross multiply
    12,268.96x = 18,396.40 × 5,688.72
  4. Step 4: Simplify right side
    12,268.96x = 104,651,968.61
  5. Step 5: Solve for x
    x = 104,651,968.61/12,268.96
  6. Step 6: Final answer
    x = 8,529.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.