Home / 12,389.22-18,583.83-4,389.93

Finding the Fourth Proportional to 12,389.22, 18,583.83 and 4,389.93

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Solution

The fourth proportional to 12,389.22, 18,583.83 and 4,389.93 is: 6,584.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.22 : 18,583.83 = 4,389.93 : x
  2. Step 2: Convert to fraction form
    12,389.22/18,583.83 = 4,389.93/x
  3. Step 3: Cross multiply
    12,389.22x = 18,583.83 × 4,389.93
  4. Step 4: Simplify right side
    12,389.22x = 81,581,712.83
  5. Step 5: Solve for x
    x = 81,581,712.83/12,389.22
  6. Step 6: Final answer
    x = 6,584.90

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Similar ratio
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1.5x scale

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.