Home / 18,775.49-28,154.23-7,081.25

Finding the Fourth Proportional to 18,775.49, 28,154.23 and 7,081.25

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Solution

The fourth proportional to 18,775.49, 28,154.23 and 7,081.25 is: 10,618.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,775.49 : 28,154.23 = 7,081.25 : x
  2. Step 2: Convert to fraction form
    18,775.49/28,154.23 = 7,081.25/x
  3. Step 3: Cross multiply
    18,775.49x = 28,154.23 × 7,081.25
  4. Step 4: Simplify right side
    18,775.49x = 199,366,982.71
  5. Step 5: Solve for x
    x = 199,366,982.71/18,775.49
  6. Step 6: Final answer
    x = 10,618.47

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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.