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Finding the Fourth Proportional to 14,119.87, 19,482.91 and 8,813.83

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Solution

The fourth proportional to 14,119.87, 19,482.91 and 8,813.83 is: 12,161.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,119.87 : 19,482.91 = 8,813.83 : x
  2. Step 2: Convert to fraction form
    14,119.87/19,482.91 = 8,813.83/x
  3. Step 3: Cross multiply
    14,119.87x = 19,482.91 × 8,813.83
  4. Step 4: Simplify right side
    14,119.87x = 171,719,056.65
  5. Step 5: Solve for x
    x = 171,719,056.65/14,119.87
  6. Step 6: Final answer
    x = 12,161.52

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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.