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Finding the Fourth Proportional to 9,918.82, 14,874.72 and 7,137.19

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Solution

The fourth proportional to 9,918.82, 14,874.72 and 7,137.19 is: 10,703.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918.82 : 14,874.72 = 7,137.19 : x
  2. Step 2: Convert to fraction form
    9,918.82/14,874.72 = 7,137.19/x
  3. Step 3: Cross multiply
    9,918.82x = 14,874.72 × 7,137.19
  4. Step 4: Simplify right side
    9,918.82x = 106,163,702.84
  5. Step 5: Solve for x
    x = 106,163,702.84/9,918.82
  6. Step 6: Final answer
    x = 10,703.26

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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.