Home / 13,638.58-18,821.46-7,589.30

Finding the Fourth Proportional to 13,638.58, 18,821.46 and 7,589.30

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Solution

The fourth proportional to 13,638.58, 18,821.46 and 7,589.30 is: 10,473.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.58 : 18,821.46 = 7,589.30 : x
  2. Step 2: Convert to fraction form
    13,638.58/18,821.46 = 7,589.30/x
  3. Step 3: Cross multiply
    13,638.58x = 18,821.46 × 7,589.30
  4. Step 4: Simplify right side
    13,638.58x = 142,841,640.73
  5. Step 5: Solve for x
    x = 142,841,640.73/13,638.58
  6. Step 6: Final answer
    x = 10,473.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.