Home / 18,970.82-28,457.61-7,284.04

Finding the Fourth Proportional to 18,970.82, 28,457.61 and 7,284.04

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Solution

The fourth proportional to 18,970.82, 28,457.61 and 7,284.04 is: 10,926.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,970.82 : 28,457.61 = 7,284.04 : x
  2. Step 2: Convert to fraction form
    18,970.82/28,457.61 = 7,284.04/x
  3. Step 3: Cross multiply
    18,970.82x = 28,457.61 × 7,284.04
  4. Step 4: Simplify right side
    18,970.82x = 207,286,369.54
  5. Step 5: Solve for x
    x = 207,286,369.54/18,970.82
  6. Step 6: Final answer
    x = 10,926.59

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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.