Home / 18,912.18-28,318.70-13,335.32

Finding the Fourth Proportional to 18,912.18, 28,318.70 and 13,335.32

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Solution

The fourth proportional to 18,912.18, 28,318.70 and 13,335.32 is: 19,968.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912.18 : 28,318.70 = 13,335.32 : x
  2. Step 2: Convert to fraction form
    18,912.18/28,318.70 = 13,335.32/x
  3. Step 3: Cross multiply
    18,912.18x = 28,318.70 × 13,335.32
  4. Step 4: Simplify right side
    18,912.18x = 377,638,926.48
  5. Step 5: Solve for x
    x = 377,638,926.48/18,912.18
  6. Step 6: Final answer
    x = 19,968.03

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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.