Home / 20,187.67-30,283.57-7,718.19

Finding the Fourth Proportional to 20,187.67, 30,283.57 and 7,718.19

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Solution

The fourth proportional to 20,187.67, 30,283.57 and 7,718.19 is: 11,578.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.67 : 30,283.57 = 7,718.19 : x
  2. Step 2: Convert to fraction form
    20,187.67/30,283.57 = 7,718.19/x
  3. Step 3: Cross multiply
    20,187.67x = 30,283.57 × 7,718.19
  4. Step 4: Simplify right side
    20,187.67x = 233,734,347.14
  5. Step 5: Solve for x
    x = 233,734,347.14/20,187.67
  6. Step 6: Final answer
    x = 11,578.07

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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.