Home / 12,148.91-18,223.37-9,379.63

Finding the Fourth Proportional to 12,148.91, 18,223.37 and 9,379.63

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Solution

The fourth proportional to 12,148.91, 18,223.37 and 9,379.63 is: 14,069.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,148.91 : 18,223.37 = 9,379.63 : x
  2. Step 2: Convert to fraction form
    12,148.91/18,223.37 = 9,379.63/x
  3. Step 3: Cross multiply
    12,148.91x = 18,223.37 × 9,379.63
  4. Step 4: Simplify right side
    12,148.91x = 170,928,467.95
  5. Step 5: Solve for x
    x = 170,928,467.95/12,148.91
  6. Step 6: Final answer
    x = 14,069.45

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Double scale
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Similar ratio
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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.