Home / 13,102.80-19,625.40-7,899.60

Finding the Fourth Proportional to 13,102.80, 19,625.40 and 7,899.60

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Solution

The fourth proportional to 13,102.80, 19,625.40 and 7,899.60 is: 11,832.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,102.80 : 19,625.40 = 7,899.60 : x
  2. Step 2: Convert to fraction form
    13,102.80/19,625.40 = 7,899.60/x
  3. Step 3: Cross multiply
    13,102.80x = 19,625.40 × 7,899.60
  4. Step 4: Simplify right side
    13,102.80x = 155,032,809.84
  5. Step 5: Solve for x
    x = 155,032,809.84/13,102.80
  6. Step 6: Final answer
    x = 11,832.04

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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.