Home / 13,290.84-19,929.66-7,745.58

Finding the Fourth Proportional to 13,290.84, 19,929.66 and 7,745.58

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Solution

The fourth proportional to 13,290.84, 19,929.66 and 7,745.58 is: 11,614.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.84 : 19,929.66 = 7,745.58 : x
  2. Step 2: Convert to fraction form
    13,290.84/19,929.66 = 7,745.58/x
  3. Step 3: Cross multiply
    13,290.84x = 19,929.66 × 7,745.58
  4. Step 4: Simplify right side
    13,290.84x = 154,366,775.90
  5. Step 5: Solve for x
    x = 154,366,775.90/13,290.84
  6. Step 6: Final answer
    x = 11,614.52

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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.