Home / 12,621.03-18,938.07-5,605.89

Finding the Fourth Proportional to 12,621.03, 18,938.07 and 5,605.89

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Solution

The fourth proportional to 12,621.03, 18,938.07 and 5,605.89 is: 8,411.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.03 : 18,938.07 = 5,605.89 : x
  2. Step 2: Convert to fraction form
    12,621.03/18,938.07 = 5,605.89/x
  3. Step 3: Cross multiply
    12,621.03x = 18,938.07 × 5,605.89
  4. Step 4: Simplify right side
    12,621.03x = 106,164,737.23
  5. Step 5: Solve for x
    x = 106,164,737.23/12,621.03
  6. Step 6: Final answer
    x = 8,411.73

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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.