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Finding the Fourth Proportional to 19,608.67, 27,041.34 and 12,899.98

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Solution

The fourth proportional to 19,608.67, 27,041.34 and 12,899.98 is: 17,789.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,608.67 : 27,041.34 = 12,899.98 : x
  2. Step 2: Convert to fraction form
    19,608.67/27,041.34 = 12,899.98/x
  3. Step 3: Cross multiply
    19,608.67x = 27,041.34 × 12,899.98
  4. Step 4: Simplify right side
    19,608.67x = 348,832,745.17
  5. Step 5: Solve for x
    x = 348,832,745.17/19,608.67
  6. Step 6: Final answer
    x = 17,789.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.