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Finding the Fourth Proportional to 11,257.40, 16,853.70 and 11,257.40

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Solution

The fourth proportional to 11,257.40, 16,853.70 and 11,257.40 is: 16,853.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,257.40 : 16,853.70 = 11,257.40 : x
  2. Step 2: Convert to fraction form
    11,257.40/16,853.70 = 11,257.40/x
  3. Step 3: Cross multiply
    11,257.40x = 16,853.70 × 11,257.40
  4. Step 4: Simplify right side
    11,257.40x = 189,728,842.38
  5. Step 5: Solve for x
    x = 189,728,842.38/11,257.40
  6. Step 6: Final answer
    x = 16,853.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.