Home / 20,612.83-30,916.72-8,771.36

Finding the Fourth Proportional to 20,612.83, 30,916.72 and 8,771.36

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Solution

The fourth proportional to 20,612.83, 30,916.72 and 8,771.36 is: 13,155.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,612.83 : 30,916.72 = 8,771.36 : x
  2. Step 2: Convert to fraction form
    20,612.83/30,916.72 = 8,771.36/x
  3. Step 3: Cross multiply
    20,612.83x = 30,916.72 × 8,771.36
  4. Step 4: Simplify right side
    20,612.83x = 271,181,482.70
  5. Step 5: Solve for x
    x = 271,181,482.70/20,612.83
  6. Step 6: Final answer
    x = 13,155.96

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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.