Home / 13,419.42-18,516.11-8,114.55

Finding the Fourth Proportional to 13,419.42, 18,516.11 and 8,114.55

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Solution

The fourth proportional to 13,419.42, 18,516.11 and 8,114.55 is: 11,196.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.42 : 18,516.11 = 8,114.55 : x
  2. Step 2: Convert to fraction form
    13,419.42/18,516.11 = 8,114.55/x
  3. Step 3: Cross multiply
    13,419.42x = 18,516.11 × 8,114.55
  4. Step 4: Simplify right side
    13,419.42x = 150,249,859.83
  5. Step 5: Solve for x
    x = 150,249,859.83/13,419.42
  6. Step 6: Final answer
    x = 11,196.45

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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.