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Finding the Fourth Proportional to 19,313.56, 28,897.44 and 12,747.70

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Solution

The fourth proportional to 19,313.56, 28,897.44 and 12,747.70 is: 19,073.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,313.56 : 28,897.44 = 12,747.70 : x
  2. Step 2: Convert to fraction form
    19,313.56/28,897.44 = 12,747.70/x
  3. Step 3: Cross multiply
    19,313.56x = 28,897.44 × 12,747.70
  4. Step 4: Simplify right side
    19,313.56x = 368,375,895.89
  5. Step 5: Solve for x
    x = 368,375,895.89/19,313.56
  6. Step 6: Final answer
    x = 19,073.43

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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.