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Finding the Fourth Proportional to 9,369.55, 12,903.64 and 9,165.43

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Solution

The fourth proportional to 9,369.55, 12,903.64 and 9,165.43 is: 12,622.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,369.55 : 12,903.64 = 9,165.43 : x
  2. Step 2: Convert to fraction form
    9,369.55/12,903.64 = 9,165.43/x
  3. Step 3: Cross multiply
    9,369.55x = 12,903.64 × 9,165.43
  4. Step 4: Simplify right side
    9,369.55x = 118,267,409.17
  5. Step 5: Solve for x
    x = 118,267,409.17/9,369.55
  6. Step 6: Final answer
    x = 12,622.53

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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.