Home / 12,623.90-18,935.84-3,389.90

Finding the Fourth Proportional to 12,623.90, 18,935.84 and 3,389.90

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Solution

The fourth proportional to 12,623.90, 18,935.84 and 3,389.90 is: 5,084.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,623.90 : 18,935.84 = 3,389.90 : x
  2. Step 2: Convert to fraction form
    12,623.90/18,935.84 = 3,389.90/x
  3. Step 3: Cross multiply
    12,623.90x = 18,935.84 × 3,389.90
  4. Step 4: Simplify right side
    12,623.90x = 64,190,604.02
  5. Step 5: Solve for x
    x = 64,190,604.02/12,623.90
  6. Step 6: Final answer
    x = 5,084.85

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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.