Home / 18,218.07-27,329.67-7,681.50

Finding the Fourth Proportional to 18,218.07, 27,329.67 and 7,681.50

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Solution

The fourth proportional to 18,218.07, 27,329.67 and 7,681.50 is: 11,523.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,218.07 : 27,329.67 = 7,681.50 : x
  2. Step 2: Convert to fraction form
    18,218.07/27,329.67 = 7,681.50/x
  3. Step 3: Cross multiply
    18,218.07x = 27,329.67 × 7,681.50
  4. Step 4: Simplify right side
    18,218.07x = 209,932,860.11
  5. Step 5: Solve for x
    x = 209,932,860.11/18,218.07
  6. Step 6: Final answer
    x = 11,523.33

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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.