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Finding the Fourth Proportional to 26,607, 39,917.28 and 7,887.72

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Solution

The fourth proportional to 26,607, 39,917.28 and 7,887.72 is: 11,833.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,607 : 39,917.28 = 7,887.72 : x
  2. Step 2: Convert to fraction form
    26,607/39,917.28 = 7,887.72/x
  3. Step 3: Cross multiply
    26,607x = 39,917.28 × 7,887.72
  4. Step 4: Simplify right side
    26,607x = 314,856,327.80
  5. Step 5: Solve for x
    x = 314,856,327.80/26,607
  6. Step 6: Final answer
    x = 11,833.59

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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.