Home / 13,544.45-18,683.81-7,878.56

Finding the Fourth Proportional to 13,544.45, 18,683.81 and 7,878.56

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Solution

The fourth proportional to 13,544.45, 18,683.81 and 7,878.56 is: 10,868.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,544.45 : 18,683.81 = 7,878.56 : x
  2. Step 2: Convert to fraction form
    13,544.45/18,683.81 = 7,878.56/x
  3. Step 3: Cross multiply
    13,544.45x = 18,683.81 × 7,878.56
  4. Step 4: Simplify right side
    13,544.45x = 147,201,424.69
  5. Step 5: Solve for x
    x = 147,201,424.69/13,544.45
  6. Step 6: Final answer
    x = 10,868.03

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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.