Home / 12,181.54-16,809.51-7,145.23

Finding the Fourth Proportional to 12,181.54, 16,809.51 and 7,145.23

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Solution

The fourth proportional to 12,181.54, 16,809.51 and 7,145.23 is: 9,859.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,181.54 : 16,809.51 = 7,145.23 : x
  2. Step 2: Convert to fraction form
    12,181.54/16,809.51 = 7,145.23/x
  3. Step 3: Cross multiply
    12,181.54x = 16,809.51 × 7,145.23
  4. Step 4: Simplify right side
    12,181.54x = 120,107,815.14
  5. Step 5: Solve for x
    x = 120,107,815.14/12,181.54
  6. Step 6: Final answer
    x = 9,859.82

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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.