Home / 12,638.07-18,957.12-5,237.58

Finding the Fourth Proportional to 12,638.07, 18,957.12 and 5,237.58

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Solution

The fourth proportional to 12,638.07, 18,957.12 and 5,237.58 is: 7,856.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638.07 : 18,957.12 = 5,237.58 : x
  2. Step 2: Convert to fraction form
    12,638.07/18,957.12 = 5,237.58/x
  3. Step 3: Cross multiply
    12,638.07x = 18,957.12 × 5,237.58
  4. Step 4: Simplify right side
    12,638.07x = 99,289,432.57
  5. Step 5: Solve for x
    x = 99,289,432.57/12,638.07
  6. Step 6: Final answer
    x = 7,856.38

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