Home / 12,638.06-18,962.00-5,240.63

Finding the Fourth Proportional to 12,638.06, 18,962.00 and 5,240.63

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Solution

The fourth proportional to 12,638.06, 18,962.00 and 5,240.63 is: 7,862.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638.06 : 18,962.00 = 5,240.63 : x
  2. Step 2: Convert to fraction form
    12,638.06/18,962.00 = 5,240.63/x
  3. Step 3: Cross multiply
    12,638.06x = 18,962.00 × 5,240.63
  4. Step 4: Simplify right side
    12,638.06x = 99,372,705.05
  5. Step 5: Solve for x
    x = 99,372,705.05/12,638.06
  6. Step 6: Final answer
    x = 7,862.97

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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.