Home / 27,920.40-41,815.80-19,107.60

Finding the Fourth Proportional to 27,920.40, 41,815.80 and 19,107.60

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Solution

The fourth proportional to 27,920.40, 41,815.80 and 19,107.60 is: 28,617.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,920.40 : 41,815.80 = 19,107.60 : x
  2. Step 2: Convert to fraction form
    27,920.40/41,815.80 = 19,107.60/x
  3. Step 3: Cross multiply
    27,920.40x = 41,815.80 × 19,107.60
  4. Step 4: Simplify right side
    27,920.40x = 798,999,580.08
  5. Step 5: Solve for x
    x = 798,999,580.08/27,920.40
  6. Step 6: Final answer
    x = 28,617.05

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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.