Home / 18,815.09-28,222.63-6,972.94

Finding the Fourth Proportional to 18,815.09, 28,222.63 and 6,972.94

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Solution

The fourth proportional to 18,815.09, 28,222.63 and 6,972.94 is: 10,459.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.09 : 28,222.63 = 6,972.94 : x
  2. Step 2: Convert to fraction form
    18,815.09/28,222.63 = 6,972.94/x
  3. Step 3: Cross multiply
    18,815.09x = 28,222.63 × 6,972.94
  4. Step 4: Simplify right side
    18,815.09x = 196,794,564.73
  5. Step 5: Solve for x
    x = 196,794,564.73/18,815.09
  6. Step 6: Final answer
    x = 10,459.40

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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.