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Finding the Fourth Proportional to 9,963.03, 13,748.63 and 6,429.81

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Solution

The fourth proportional to 9,963.03, 13,748.63 and 6,429.81 is: 8,872.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,963.03 : 13,748.63 = 6,429.81 : x
  2. Step 2: Convert to fraction form
    9,963.03/13,748.63 = 6,429.81/x
  3. Step 3: Cross multiply
    9,963.03x = 13,748.63 × 6,429.81
  4. Step 4: Simplify right side
    9,963.03x = 88,401,046.51
  5. Step 5: Solve for x
    x = 88,401,046.51/9,963.03
  6. Step 6: Final answer
    x = 8,872.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.