Home / 13,675.81-18,872.63-7,388.19

Finding the Fourth Proportional to 13,675.81, 18,872.63 and 7,388.19

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Solution

The fourth proportional to 13,675.81, 18,872.63 and 7,388.19 is: 10,195.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,675.81 : 18,872.63 = 7,388.19 : x
  2. Step 2: Convert to fraction form
    13,675.81/18,872.63 = 7,388.19/x
  3. Step 3: Cross multiply
    13,675.81x = 18,872.63 × 7,388.19
  4. Step 4: Simplify right side
    13,675.81x = 139,434,576.24
  5. Step 5: Solve for x
    x = 139,434,576.24/13,675.81
  6. Step 6: Final answer
    x = 10,195.71

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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.