Home / 20,353.50-28,085.54-11,857.41

Finding the Fourth Proportional to 20,353.50, 28,085.54 and 11,857.41

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Solution

The fourth proportional to 20,353.50, 28,085.54 and 11,857.41 is: 16,361.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,353.50 : 28,085.54 = 11,857.41 : x
  2. Step 2: Convert to fraction form
    20,353.50/28,085.54 = 11,857.41/x
  3. Step 3: Cross multiply
    20,353.50x = 28,085.54 × 11,857.41
  4. Step 4: Simplify right side
    20,353.50x = 333,021,703.56
  5. Step 5: Solve for x
    x = 333,021,703.56/20,353.50
  6. Step 6: Final answer
    x = 16,361.89

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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.