Home / 12,181.05-16,813.44-7,146.36

Finding the Fourth Proportional to 12,181.05, 16,813.44 and 7,146.36

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Solution

The fourth proportional to 12,181.05, 16,813.44 and 7,146.36 is: 9,864.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,181.05 : 16,813.44 = 7,146.36 : x
  2. Step 2: Convert to fraction form
    12,181.05/16,813.44 = 7,146.36/x
  3. Step 3: Cross multiply
    12,181.05x = 16,813.44 × 7,146.36
  4. Step 4: Simplify right side
    12,181.05x = 120,154,895.08
  5. Step 5: Solve for x
    x = 120,154,895.08/12,181.05
  6. Step 6: Final answer
    x = 9,864.08

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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.