Home / 12,181.12-18,278.09-8,646.08

Finding the Fourth Proportional to 12,181.12, 18,278.09 and 8,646.08

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Solution

The fourth proportional to 12,181.12, 18,278.09 and 8,646.08 is: 12,973.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,181.12 : 18,278.09 = 8,646.08 : x
  2. Step 2: Convert to fraction form
    12,181.12/18,278.09 = 8,646.08/x
  3. Step 3: Cross multiply
    12,181.12x = 18,278.09 × 8,646.08
  4. Step 4: Simplify right side
    12,181.12x = 158,033,693.77
  5. Step 5: Solve for x
    x = 158,033,693.77/12,181.12
  6. Step 6: Final answer
    x = 12,973.66

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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.