Home / 8,920.08-13,367.32-7,821.84

Finding the Fourth Proportional to 8,920.08, 13,367.32 and 7,821.84

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Solution

The fourth proportional to 8,920.08, 13,367.32 and 7,821.84 is: 11,721.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920.08 : 13,367.32 = 7,821.84 : x
  2. Step 2: Convert to fraction form
    8,920.08/13,367.32 = 7,821.84/x
  3. Step 3: Cross multiply
    8,920.08x = 13,367.32 × 7,821.84
  4. Step 4: Simplify right side
    8,920.08x = 104,557,038.27
  5. Step 5: Solve for x
    x = 104,557,038.27/8,920.08
  6. Step 6: Final answer
    x = 11,721.54

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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.