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Finding the Fourth Proportional to 9,907.49, 14,863.71 and 6,991.49

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Solution

The fourth proportional to 9,907.49, 14,863.71 and 6,991.49 is: 10,488.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,907.49 : 14,863.71 = 6,991.49 : x
  2. Step 2: Convert to fraction form
    9,907.49/14,863.71 = 6,991.49/x
  3. Step 3: Cross multiply
    9,907.49x = 14,863.71 × 6,991.49
  4. Step 4: Simplify right side
    9,907.49x = 103,919,479.83
  5. Step 5: Solve for x
    x = 103,919,479.83/9,907.49
  6. Step 6: Final answer
    x = 10,488.98

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Double scale
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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.