Home / 13,012.92-19,482.39-8,621.64

Finding the Fourth Proportional to 13,012.92, 19,482.39 and 8,621.64

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Solution

The fourth proportional to 13,012.92, 19,482.39 and 8,621.64 is: 12,907.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,012.92 : 19,482.39 = 8,621.64 : x
  2. Step 2: Convert to fraction form
    13,012.92/19,482.39 = 8,621.64/x
  3. Step 3: Cross multiply
    13,012.92x = 19,482.39 × 8,621.64
  4. Step 4: Simplify right side
    13,012.92x = 167,970,152.92
  5. Step 5: Solve for x
    x = 167,970,152.92/13,012.92
  6. Step 6: Final answer
    x = 12,907.95

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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.