Home / 18,907.09-28,365.30-7,816.95

Finding the Fourth Proportional to 18,907.09, 28,365.30 and 7,816.95

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Solution

The fourth proportional to 18,907.09, 28,365.30 and 7,816.95 is: 11,727.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907.09 : 28,365.30 = 7,816.95 : x
  2. Step 2: Convert to fraction form
    18,907.09/28,365.30 = 7,816.95/x
  3. Step 3: Cross multiply
    18,907.09x = 28,365.30 × 7,816.95
  4. Step 4: Simplify right side
    18,907.09x = 221,730,131.84
  5. Step 5: Solve for x
    x = 221,730,131.84/18,907.09
  6. Step 6: Final answer
    x = 11,727.36

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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.