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Finding the Fourth Proportional to 9,621.90, 13,262.67 and 8,325.90

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Solution

The fourth proportional to 9,621.90, 13,262.67 and 8,325.90 is: 11,476.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,621.90 : 13,262.67 = 8,325.90 : x
  2. Step 2: Convert to fraction form
    9,621.90/13,262.67 = 8,325.90/x
  3. Step 3: Cross multiply
    9,621.90x = 13,262.67 × 8,325.90
  4. Step 4: Simplify right side
    9,621.90x = 110,423,664.15
  5. Step 5: Solve for x
    x = 110,423,664.15/9,621.90
  6. Step 6: Final answer
    x = 11,476.28

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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.