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Finding the Fourth Proportional to 9,503.12, 13,117.96 and 8,506.64

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Solution

The fourth proportional to 9,503.12, 13,117.96 and 8,506.64 is: 11,742.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,503.12 : 13,117.96 = 8,506.64 : x
  2. Step 2: Convert to fraction form
    9,503.12/13,117.96 = 8,506.64/x
  3. Step 3: Cross multiply
    9,503.12x = 13,117.96 × 8,506.64
  4. Step 4: Simplify right side
    9,503.12x = 111,589,763.25
  5. Step 5: Solve for x
    x = 111,589,763.25/9,503.12
  6. Step 6: Final answer
    x = 11,742.43

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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.