Home / 28,933.66-39,915.21-16,996.78

Finding the Fourth Proportional to 28,933.66, 39,915.21 and 16,996.78

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Solution

The fourth proportional to 28,933.66, 39,915.21 and 16,996.78 is: 23,447.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,933.66 : 39,915.21 = 16,996.78 : x
  2. Step 2: Convert to fraction form
    28,933.66/39,915.21 = 16,996.78/x
  3. Step 3: Cross multiply
    28,933.66x = 39,915.21 × 16,996.78
  4. Step 4: Simplify right side
    28,933.66x = 678,430,043.02
  5. Step 5: Solve for x
    x = 678,430,043.02/28,933.66
  6. Step 6: Final answer
    x = 23,447.78

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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.