Home / 12,156.83-18,235.23-9,387.54

Finding the Fourth Proportional to 12,156.83, 18,235.23 and 9,387.54

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Solution

The fourth proportional to 12,156.83, 18,235.23 and 9,387.54 is: 14,081.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.83 : 18,235.23 = 9,387.54 : x
  2. Step 2: Convert to fraction form
    12,156.83/18,235.23 = 9,387.54/x
  3. Step 3: Cross multiply
    12,156.83x = 18,235.23 × 9,387.54
  4. Step 4: Simplify right side
    12,156.83x = 171,183,951.03
  5. Step 5: Solve for x
    x = 171,183,951.03/12,156.83
  6. Step 6: Final answer
    x = 14,081.30

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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.