Home / 26,619.86-39,938.11-7,899.99

Finding the Fourth Proportional to 26,619.86, 39,938.11 and 7,899.99

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Solution

The fourth proportional to 26,619.86, 39,938.11 and 7,899.99 is: 11,852.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,619.86 : 39,938.11 = 7,899.99 : x
  2. Step 2: Convert to fraction form
    26,619.86/39,938.11 = 7,899.99/x
  3. Step 3: Cross multiply
    26,619.86x = 39,938.11 × 7,899.99
  4. Step 4: Simplify right side
    26,619.86x = 315,510,649.87
  5. Step 5: Solve for x
    x = 315,510,649.87/26,619.86
  6. Step 6: Final answer
    x = 11,852.45

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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.