Home / 18,729.32-28,069.74-7,623

Finding the Fourth Proportional to 18,729.32, 28,069.74 and 7,623

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Solution

The fourth proportional to 18,729.32, 28,069.74 and 7,623 is: 11,424.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.32 : 28,069.74 = 7,623 : x
  2. Step 2: Convert to fraction form
    18,729.32/28,069.74 = 7,623/x
  3. Step 3: Cross multiply
    18,729.32x = 28,069.74 × 7,623
  4. Step 4: Simplify right side
    18,729.32x = 213,975,628.02
  5. Step 5: Solve for x
    x = 213,975,628.02/18,729.32
  6. Step 6: Final answer
    x = 11,424.64

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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.