Home / 13,326.18-18,467.90-13,138.26

Finding the Fourth Proportional to 13,326.18, 18,467.90 and 13,138.26

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Solution

The fourth proportional to 13,326.18, 18,467.90 and 13,138.26 is: 18,207.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,326.18 : 18,467.90 = 13,138.26 : x
  2. Step 2: Convert to fraction form
    13,326.18/18,467.90 = 13,138.26/x
  3. Step 3: Cross multiply
    13,326.18x = 18,467.90 × 13,138.26
  4. Step 4: Simplify right side
    13,326.18x = 242,636,071.85
  5. Step 5: Solve for x
    x = 242,636,071.85/13,326.18
  6. Step 6: Final answer
    x = 18,207.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.