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Finding the Fourth Proportional to 14,431.56, 19,911.60 and 8,761.56

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Solution

The fourth proportional to 14,431.56, 19,911.60 and 8,761.56 is: 12,088.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,431.56 : 19,911.60 = 8,761.56 : x
  2. Step 2: Convert to fraction form
    14,431.56/19,911.60 = 8,761.56/x
  3. Step 3: Cross multiply
    14,431.56x = 19,911.60 × 8,761.56
  4. Step 4: Simplify right side
    14,431.56x = 174,456,678.10
  5. Step 5: Solve for x
    x = 174,456,678.10/14,431.56
  6. Step 6: Final answer
    x = 12,088.55

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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.