Home / 28,529.12-39,372-15,954.80

Finding the Fourth Proportional to 28,529.12, 39,372 and 15,954.80

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Solution

The fourth proportional to 28,529.12, 39,372 and 15,954.80 is: 22,018.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,529.12 : 39,372 = 15,954.80 : x
  2. Step 2: Convert to fraction form
    28,529.12/39,372 = 15,954.80/x
  3. Step 3: Cross multiply
    28,529.12x = 39,372 × 15,954.80
  4. Step 4: Simplify right side
    28,529.12x = 628,172,385.60
  5. Step 5: Solve for x
    x = 628,172,385.60/28,529.12
  6. Step 6: Final answer
    x = 22,018.64

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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.