Home / 12,880.68-19,323.81-3,995.84

Finding the Fourth Proportional to 12,880.68, 19,323.81 and 3,995.84

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Solution

The fourth proportional to 12,880.68, 19,323.81 and 3,995.84 is: 5,994.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.68 : 19,323.81 = 3,995.84 : x
  2. Step 2: Convert to fraction form
    12,880.68/19,323.81 = 3,995.84/x
  3. Step 3: Cross multiply
    12,880.68x = 19,323.81 × 3,995.84
  4. Step 4: Simplify right side
    12,880.68x = 77,214,827.24
  5. Step 5: Solve for x
    x = 77,214,827.24/12,880.68
  6. Step 6: Final answer
    x = 5,994.62

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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.