Home / 18,163.04-25,065.30-9,986.99

Finding the Fourth Proportional to 18,163.04, 25,065.30 and 9,986.99

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Solution

The fourth proportional to 18,163.04, 25,065.30 and 9,986.99 is: 13,782.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,163.04 : 25,065.30 = 9,986.99 : x
  2. Step 2: Convert to fraction form
    18,163.04/25,065.30 = 9,986.99/x
  3. Step 3: Cross multiply
    18,163.04x = 25,065.30 × 9,986.99
  4. Step 4: Simplify right side
    18,163.04x = 250,326,900.45
  5. Step 5: Solve for x
    x = 250,326,900.45/18,163.04
  6. Step 6: Final answer
    x = 13,782.21

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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.