Home / 15,138.05-20,893.19-8,763.57

Finding the Fourth Proportional to 15,138.05, 20,893.19 and 8,763.57

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Solution

The fourth proportional to 15,138.05, 20,893.19 and 8,763.57 is: 12,095.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138.05 : 20,893.19 = 8,763.57 : x
  2. Step 2: Convert to fraction form
    15,138.05/20,893.19 = 8,763.57/x
  3. Step 3: Cross multiply
    15,138.05x = 20,893.19 × 8,763.57
  4. Step 4: Simplify right side
    15,138.05x = 183,098,889.27
  5. Step 5: Solve for x
    x = 183,098,889.27/15,138.05
  6. Step 6: Final answer
    x = 12,095.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.