Home / 21,394.45-29,519.60-13,433.77

Finding the Fourth Proportional to 21,394.45, 29,519.60 and 13,433.77

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Solution

The fourth proportional to 21,394.45, 29,519.60 and 13,433.77 is: 18,535.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,394.45 : 29,519.60 = 13,433.77 : x
  2. Step 2: Convert to fraction form
    21,394.45/29,519.60 = 13,433.77/x
  3. Step 3: Cross multiply
    21,394.45x = 29,519.60 × 13,433.77
  4. Step 4: Simplify right side
    21,394.45x = 396,559,516.89
  5. Step 5: Solve for x
    x = 396,559,516.89/21,394.45
  6. Step 6: Final answer
    x = 18,535.63

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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.