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Finding the Fourth Proportional to 9,333.72, 13,931.88 and 8,554.44

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Solution

The fourth proportional to 9,333.72, 13,931.88 and 8,554.44 is: 12,768.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,333.72 : 13,931.88 = 8,554.44 : x
  2. Step 2: Convert to fraction form
    9,333.72/13,931.88 = 8,554.44/x
  3. Step 3: Cross multiply
    9,333.72x = 13,931.88 × 8,554.44
  4. Step 4: Simplify right side
    9,333.72x = 119,179,431.55
  5. Step 5: Solve for x
    x = 119,179,431.55/9,333.72
  6. Step 6: Final answer
    x = 12,768.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.