Home / 21,876.99-30,203.60-13,504.83

Finding the Fourth Proportional to 21,876.99, 30,203.60 and 13,504.83

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Solution

The fourth proportional to 21,876.99, 30,203.60 and 13,504.83 is: 18,644.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,876.99 : 30,203.60 = 13,504.83 : x
  2. Step 2: Convert to fraction form
    21,876.99/30,203.60 = 13,504.83/x
  3. Step 3: Cross multiply
    21,876.99x = 30,203.60 × 13,504.83
  4. Step 4: Simplify right side
    21,876.99x = 407,894,415.86
  5. Step 5: Solve for x
    x = 407,894,415.86/21,876.99
  6. Step 6: Final answer
    x = 18,644.91

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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.