Home / 12,807.03-19,194.13-9,879.19

Finding the Fourth Proportional to 12,807.03, 19,194.13 and 9,879.19

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Solution

The fourth proportional to 12,807.03, 19,194.13 and 9,879.19 is: 14,806.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,807.03 : 19,194.13 = 9,879.19 : x
  2. Step 2: Convert to fraction form
    12,807.03/19,194.13 = 9,879.19/x
  3. Step 3: Cross multiply
    12,807.03x = 19,194.13 × 9,879.19
  4. Step 4: Simplify right side
    12,807.03x = 189,622,457.15
  5. Step 5: Solve for x
    x = 189,622,457.15/12,807.03
  6. Step 6: Final answer
    x = 14,806.12

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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.