Home / 21,879.86-30,235.07-17,899.52

Finding the Fourth Proportional to 21,879.86, 30,235.07 and 17,899.52

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Solution

The fourth proportional to 21,879.86, 30,235.07 and 17,899.52 is: 24,734.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,879.86 : 30,235.07 = 17,899.52 : x
  2. Step 2: Convert to fraction form
    21,879.86/30,235.07 = 17,899.52/x
  3. Step 3: Cross multiply
    21,879.86x = 30,235.07 × 17,899.52
  4. Step 4: Simplify right side
    21,879.86x = 541,193,133.74
  5. Step 5: Solve for x
    x = 541,193,133.74/21,879.86
  6. Step 6: Final answer
    x = 24,734.77

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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.