Home / 12,720.08-19,077.96-3,486.32

Finding the Fourth Proportional to 12,720.08, 19,077.96 and 3,486.32

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Solution

The fourth proportional to 12,720.08, 19,077.96 and 3,486.32 is: 5,228.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.08 : 19,077.96 = 3,486.32 : x
  2. Step 2: Convert to fraction form
    12,720.08/19,077.96 = 3,486.32/x
  3. Step 3: Cross multiply
    12,720.08x = 19,077.96 × 3,486.32
  4. Step 4: Simplify right side
    12,720.08x = 66,511,873.51
  5. Step 5: Solve for x
    x = 66,511,873.51/12,720.08
  6. Step 6: Final answer
    x = 5,228.89

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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.