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Finding the Fourth Proportional to 9,141.70, 12,824.30 and 9,141.70

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Solution

The fourth proportional to 9,141.70, 12,824.30 and 9,141.70 is: 12,824.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,141.70 : 12,824.30 = 9,141.70 : x
  2. Step 2: Convert to fraction form
    9,141.70/12,824.30 = 9,141.70/x
  3. Step 3: Cross multiply
    9,141.70x = 12,824.30 × 9,141.70
  4. Step 4: Simplify right side
    9,141.70x = 117,235,903.31
  5. Step 5: Solve for x
    x = 117,235,903.31/9,141.70
  6. Step 6: Final answer
    x = 12,824.30

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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.