Home / 13,438.42-20,120.65-10,141.53

Finding the Fourth Proportional to 13,438.42, 20,120.65 and 10,141.53

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Solution

The fourth proportional to 13,438.42, 20,120.65 and 10,141.53 is: 15,184.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.42 : 20,120.65 = 10,141.53 : x
  2. Step 2: Convert to fraction form
    13,438.42/20,120.65 = 10,141.53/x
  3. Step 3: Cross multiply
    13,438.42x = 20,120.65 × 10,141.53
  4. Step 4: Simplify right side
    13,438.42x = 204,054,175.59
  5. Step 5: Solve for x
    x = 204,054,175.59/13,438.42
  6. Step 6: Final answer
    x = 15,184.39

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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.