Home / 12,728.08-19,089.92-3,368.20

Finding the Fourth Proportional to 12,728.08, 19,089.92 and 3,368.20

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Solution

The fourth proportional to 12,728.08, 19,089.92 and 3,368.20 is: 5,051.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.08 : 19,089.92 = 3,368.20 : x
  2. Step 2: Convert to fraction form
    12,728.08/19,089.92 = 3,368.20/x
  3. Step 3: Cross multiply
    12,728.08x = 19,089.92 × 3,368.20
  4. Step 4: Simplify right side
    12,728.08x = 64,298,668.54
  5. Step 5: Solve for x
    x = 64,298,668.54/12,728.08
  6. Step 6: Final answer
    x = 5,051.72

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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.