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Finding the Fourth Proportional to 18,719.69, 28,083.71 and 7,033.01

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Solution

The fourth proportional to 18,719.69, 28,083.71 and 7,033.01 is: 10,551.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.69 : 28,083.71 = 7,033.01 : x
  2. Step 2: Convert to fraction form
    18,719.69/28,083.71 = 7,033.01/x
  3. Step 3: Cross multiply
    18,719.69x = 28,083.71 × 7,033.01
  4. Step 4: Simplify right side
    18,719.69x = 197,512,890.43
  5. Step 5: Solve for x
    x = 197,512,890.43/18,719.69
  6. Step 6: Final answer
    x = 10,551.08

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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.