Home / 13,772.25-19,005.31-7,805.85

Finding the Fourth Proportional to 13,772.25, 19,005.31 and 7,805.85

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Solution

The fourth proportional to 13,772.25, 19,005.31 and 7,805.85 is: 10,771.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.25 : 19,005.31 = 7,805.85 : x
  2. Step 2: Convert to fraction form
    13,772.25/19,005.31 = 7,805.85/x
  3. Step 3: Cross multiply
    13,772.25x = 19,005.31 × 7,805.85
  4. Step 4: Simplify right side
    13,772.25x = 148,352,599.06
  5. Step 5: Solve for x
    x = 148,352,599.06/13,772.25
  6. Step 6: Final answer
    x = 10,771.85

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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.