Home / 12,909.44-19,315.26-7,647.28

Finding the Fourth Proportional to 12,909.44, 19,315.26 and 7,647.28

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Solution

The fourth proportional to 12,909.44, 19,315.26 and 7,647.28 is: 11,441.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909.44 : 19,315.26 = 7,647.28 : x
  2. Step 2: Convert to fraction form
    12,909.44/19,315.26 = 7,647.28/x
  3. Step 3: Cross multiply
    12,909.44x = 19,315.26 × 7,647.28
  4. Step 4: Simplify right side
    12,909.44x = 147,709,153.20
  5. Step 5: Solve for x
    x = 147,709,153.20/12,909.44
  6. Step 6: Final answer
    x = 11,441.95

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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.