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Finding the Fourth Proportional to 26,499.78, 39,745.08 and 7,779.51

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Solution

The fourth proportional to 26,499.78, 39,745.08 and 7,779.51 is: 11,667.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,499.78 : 39,745.08 = 7,779.51 : x
  2. Step 2: Convert to fraction form
    26,499.78/39,745.08 = 7,779.51/x
  3. Step 3: Cross multiply
    26,499.78x = 39,745.08 × 7,779.51
  4. Step 4: Simplify right side
    26,499.78x = 309,197,247.31
  5. Step 5: Solve for x
    x = 309,197,247.31/26,499.78
  6. Step 6: Final answer
    x = 11,667.92

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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.