Home / 12,638.04-18,961.98-5,240.64

Finding the Fourth Proportional to 12,638.04, 18,961.98 and 5,240.64

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Solution

The fourth proportional to 12,638.04, 18,961.98 and 5,240.64 is: 7,863.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638.04 : 18,961.98 = 5,240.64 : x
  2. Step 2: Convert to fraction form
    12,638.04/18,961.98 = 5,240.64/x
  3. Step 3: Cross multiply
    12,638.04x = 18,961.98 × 5,240.64
  4. Step 4: Simplify right side
    12,638.04x = 99,372,910.87
  5. Step 5: Solve for x
    x = 99,372,910.87/12,638.04
  6. Step 6: Final answer
    x = 7,863.00

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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.