Home / 18,986.09-28,486.69-7,296.17

Finding the Fourth Proportional to 18,986.09, 28,486.69 and 7,296.17

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Solution

The fourth proportional to 18,986.09, 28,486.69 and 7,296.17 is: 10,947.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,986.09 : 28,486.69 = 7,296.17 : x
  2. Step 2: Convert to fraction form
    18,986.09/28,486.69 = 7,296.17/x
  3. Step 3: Cross multiply
    18,986.09x = 28,486.69 × 7,296.17
  4. Step 4: Simplify right side
    18,986.09x = 207,843,572.30
  5. Step 5: Solve for x
    x = 207,843,572.30/18,986.09
  6. Step 6: Final answer
    x = 10,947.15

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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.