Home / 13,375.48-18,438.93-9,384.22

Finding the Fourth Proportional to 13,375.48, 18,438.93 and 9,384.22

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Solution

The fourth proportional to 13,375.48, 18,438.93 and 9,384.22 is: 12,936.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,375.48 : 18,438.93 = 9,384.22 : x
  2. Step 2: Convert to fraction form
    13,375.48/18,438.93 = 9,384.22/x
  3. Step 3: Cross multiply
    13,375.48x = 18,438.93 × 9,384.22
  4. Step 4: Simplify right side
    13,375.48x = 173,034,975.68
  5. Step 5: Solve for x
    x = 173,034,975.68/13,375.48
  6. Step 6: Final answer
    x = 12,936.73

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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.