Home / 25,879.24-35,699.34-21,376.36

Finding the Fourth Proportional to 25,879.24, 35,699.34 and 21,376.36

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Solution

The fourth proportional to 25,879.24, 35,699.34 and 21,376.36 is: 29,487.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,879.24 : 35,699.34 = 21,376.36 : x
  2. Step 2: Convert to fraction form
    25,879.24/35,699.34 = 21,376.36/x
  3. Step 3: Cross multiply
    25,879.24x = 35,699.34 × 21,376.36
  4. Step 4: Simplify right side
    25,879.24x = 763,121,943.60
  5. Step 5: Solve for x
    x = 763,121,943.60/25,879.24
  6. Step 6: Final answer
    x = 29,487.80

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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.