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Finding the Fourth Proportional to 9,101.70, 12,768.30 and 9,101.70

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Solution

The fourth proportional to 9,101.70, 12,768.30 and 9,101.70 is: 12,768.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,101.70 : 12,768.30 = 9,101.70 : x
  2. Step 2: Convert to fraction form
    9,101.70/12,768.30 = 9,101.70/x
  3. Step 3: Cross multiply
    9,101.70x = 12,768.30 × 9,101.70
  4. Step 4: Simplify right side
    9,101.70x = 116,213,236.11
  5. Step 5: Solve for x
    x = 116,213,236.11/9,101.70
  6. Step 6: Final answer
    x = 12,768.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.