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Finding the Fourth Proportional to 26,490.72, 39,733.68 and 8,960.72

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Solution

The fourth proportional to 26,490.72, 39,733.68 and 8,960.72 is: 13,440.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,490.72 : 39,733.68 = 8,960.72 : x
  2. Step 2: Convert to fraction form
    26,490.72/39,733.68 = 8,960.72/x
  3. Step 3: Cross multiply
    26,490.72x = 39,733.68 × 8,960.72
  4. Step 4: Simplify right side
    26,490.72x = 356,042,381.05
  5. Step 5: Solve for x
    x = 356,042,381.05/26,490.72
  6. Step 6: Final answer
    x = 13,440.27

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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.