Home / 10,879.12-15,007.44-6,893.40

Finding the Fourth Proportional to 10,879.12, 15,007.44 and 6,893.40

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Solution

The fourth proportional to 10,879.12, 15,007.44 and 6,893.40 is: 9,509.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,879.12 : 15,007.44 = 6,893.40 : x
  2. Step 2: Convert to fraction form
    10,879.12/15,007.44 = 6,893.40/x
  3. Step 3: Cross multiply
    10,879.12x = 15,007.44 × 6,893.40
  4. Step 4: Simplify right side
    10,879.12x = 103,452,286.90
  5. Step 5: Solve for x
    x = 103,452,286.90/10,879.12
  6. Step 6: Final answer
    x = 9,509.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.