Home / 18,699.12-28,052.52-7,605.78

Finding the Fourth Proportional to 18,699.12, 28,052.52 and 7,605.78

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Solution

The fourth proportional to 18,699.12, 28,052.52 and 7,605.78 is: 11,410.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699.12 : 28,052.52 = 7,605.78 : x
  2. Step 2: Convert to fraction form
    18,699.12/28,052.52 = 7,605.78/x
  3. Step 3: Cross multiply
    18,699.12x = 28,052.52 × 7,605.78
  4. Step 4: Simplify right side
    18,699.12x = 213,361,295.57
  5. Step 5: Solve for x
    x = 213,361,295.57/18,699.12
  6. Step 6: Final answer
    x = 11,410.23

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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.