Home / 12,879.04-19,317.28-4,112.40

Finding the Fourth Proportional to 12,879.04, 19,317.28 and 4,112.40

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Solution

The fourth proportional to 12,879.04, 19,317.28 and 4,112.40 is: 6,168.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.04 : 19,317.28 = 4,112.40 : x
  2. Step 2: Convert to fraction form
    12,879.04/19,317.28 = 4,112.40/x
  3. Step 3: Cross multiply
    12,879.04x = 19,317.28 × 4,112.40
  4. Step 4: Simplify right side
    12,879.04x = 79,440,382.27
  5. Step 5: Solve for x
    x = 79,440,382.27/12,879.04
  6. Step 6: Final answer
    x = 6,168.19

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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.