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Finding the Fourth Proportional to 19,297.98, 28,962.36 and 7,619.40

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Solution

The fourth proportional to 19,297.98, 28,962.36 and 7,619.40 is: 11,435.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,297.98 : 28,962.36 = 7,619.40 : x
  2. Step 2: Convert to fraction form
    19,297.98/28,962.36 = 7,619.40/x
  3. Step 3: Cross multiply
    19,297.98x = 28,962.36 × 7,619.40
  4. Step 4: Simplify right side
    19,297.98x = 220,675,805.78
  5. Step 5: Solve for x
    x = 220,675,805.78/19,297.98
  6. Step 6: Final answer
    x = 11,435.18

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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.