Home / 18,954.02-28,418.87-7,868.36

Finding the Fourth Proportional to 18,954.02, 28,418.87 and 7,868.36

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Solution

The fourth proportional to 18,954.02, 28,418.87 and 7,868.36 is: 11,797.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,954.02 : 28,418.87 = 7,868.36 : x
  2. Step 2: Convert to fraction form
    18,954.02/28,418.87 = 7,868.36/x
  3. Step 3: Cross multiply
    18,954.02x = 28,418.87 × 7,868.36
  4. Step 4: Simplify right side
    18,954.02x = 223,609,990.67
  5. Step 5: Solve for x
    x = 223,609,990.67/18,954.02
  6. Step 6: Final answer
    x = 11,797.50

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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.