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Finding the Fourth Proportional to 19,305.43, 26,639.54 and 10,807

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Solution

The fourth proportional to 19,305.43, 26,639.54 and 10,807 is: 14,912.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,305.43 : 26,639.54 = 10,807 : x
  2. Step 2: Convert to fraction form
    19,305.43/26,639.54 = 10,807/x
  3. Step 3: Cross multiply
    19,305.43x = 26,639.54 × 10,807
  4. Step 4: Simplify right side
    19,305.43x = 287,893,508.78
  5. Step 5: Solve for x
    x = 287,893,508.78/19,305.43
  6. Step 6: Final answer
    x = 14,912.57

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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.