Home / 13,119.49-19,685.05-6,878.01

Finding the Fourth Proportional to 13,119.49, 19,685.05 and 6,878.01

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Solution

The fourth proportional to 13,119.49, 19,685.05 and 6,878.01 is: 10,320.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119.49 : 19,685.05 = 6,878.01 : x
  2. Step 2: Convert to fraction form
    13,119.49/19,685.05 = 6,878.01/x
  3. Step 3: Cross multiply
    13,119.49x = 19,685.05 × 6,878.01
  4. Step 4: Simplify right side
    13,119.49x = 135,394,046.72
  5. Step 5: Solve for x
    x = 135,394,046.72/13,119.49
  6. Step 6: Final answer
    x = 10,320.07

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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.