Home / 21,004.83-28,983.95-13,451.87

Finding the Fourth Proportional to 21,004.83, 28,983.95 and 13,451.87

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Solution

The fourth proportional to 21,004.83, 28,983.95 and 13,451.87 is: 18,561.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.83 : 28,983.95 = 13,451.87 : x
  2. Step 2: Convert to fraction form
    21,004.83/28,983.95 = 13,451.87/x
  3. Step 3: Cross multiply
    21,004.83x = 28,983.95 × 13,451.87
  4. Step 4: Simplify right side
    21,004.83x = 389,888,115.31
  5. Step 5: Solve for x
    x = 389,888,115.31/21,004.83
  6. Step 6: Final answer
    x = 18,561.83

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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.