Home / 12,389.10-18,583.80-3,624.18

Finding the Fourth Proportional to 12,389.10, 18,583.80 and 3,624.18

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Solution

The fourth proportional to 12,389.10, 18,583.80 and 3,624.18 is: 5,436.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.10 : 18,583.80 = 3,624.18 : x
  2. Step 2: Convert to fraction form
    12,389.10/18,583.80 = 3,624.18/x
  3. Step 3: Cross multiply
    12,389.10x = 18,583.80 × 3,624.18
  4. Step 4: Simplify right side
    12,389.10x = 67,351,036.28
  5. Step 5: Solve for x
    x = 67,351,036.28/12,389.10
  6. Step 6: Final answer
    x = 5,436.31

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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.