Home / 20,738.34-28,609.86-14,021.58

Finding the Fourth Proportional to 20,738.34, 28,609.86 and 14,021.58

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Solution

The fourth proportional to 20,738.34, 28,609.86 and 14,021.58 is: 19,343.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.34 : 28,609.86 = 14,021.58 : x
  2. Step 2: Convert to fraction form
    20,738.34/28,609.86 = 14,021.58/x
  3. Step 3: Cross multiply
    20,738.34x = 28,609.86 × 14,021.58
  4. Step 4: Simplify right side
    20,738.34x = 401,155,440.78
  5. Step 5: Solve for x
    x = 401,155,440.78/20,738.34
  6. Step 6: Final answer
    x = 19,343.66

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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.