Home / 12,642.85-18,962.79-5,623.03

Finding the Fourth Proportional to 12,642.85, 18,962.79 and 5,623.03

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Solution

The fourth proportional to 12,642.85, 18,962.79 and 5,623.03 is: 8,433.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642.85 : 18,962.79 = 5,623.03 : x
  2. Step 2: Convert to fraction form
    12,642.85/18,962.79 = 5,623.03/x
  3. Step 3: Cross multiply
    12,642.85x = 18,962.79 × 5,623.03
  4. Step 4: Simplify right side
    12,642.85x = 106,628,337.05
  5. Step 5: Solve for x
    x = 106,628,337.05/12,642.85
  6. Step 6: Final answer
    x = 8,433.88

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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.