Home / 12,879.08-19,322.52-5,386.28

Finding the Fourth Proportional to 12,879.08, 19,322.52 and 5,386.28

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Solution

The fourth proportional to 12,879.08, 19,322.52 and 5,386.28 is: 8,081.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.08 : 19,322.52 = 5,386.28 : x
  2. Step 2: Convert to fraction form
    12,879.08/19,322.52 = 5,386.28/x
  3. Step 3: Cross multiply
    12,879.08x = 19,322.52 × 5,386.28
  4. Step 4: Simplify right side
    12,879.08x = 104,076,503.03
  5. Step 5: Solve for x
    x = 104,076,503.03/12,879.08
  6. Step 6: Final answer
    x = 8,081.05

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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.