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Finding the Fourth Proportional to 19,095.78, 28,632.16 and 8,563.89

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Solution

The fourth proportional to 19,095.78, 28,632.16 and 8,563.89 is: 12,840.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,095.78 : 28,632.16 = 8,563.89 : x
  2. Step 2: Convert to fraction form
    19,095.78/28,632.16 = 8,563.89/x
  3. Step 3: Cross multiply
    19,095.78x = 28,632.16 × 8,563.89
  4. Step 4: Simplify right side
    19,095.78x = 245,202,668.70
  5. Step 5: Solve for x
    x = 245,202,668.70/19,095.78
  6. Step 6: Final answer
    x = 12,840.67

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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.