Home / 28,391.53-39,180.31-16,461.78

Finding the Fourth Proportional to 28,391.53, 39,180.31 and 16,461.78

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Solution

The fourth proportional to 28,391.53, 39,180.31 and 16,461.78 is: 22,717.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,391.53 : 39,180.31 = 16,461.78 : x
  2. Step 2: Convert to fraction form
    28,391.53/39,180.31 = 16,461.78/x
  3. Step 3: Cross multiply
    28,391.53x = 39,180.31 × 16,461.78
  4. Step 4: Simplify right side
    28,391.53x = 644,977,816.92
  5. Step 5: Solve for x
    x = 644,977,816.92/28,391.53
  6. Step 6: Final answer
    x = 22,717.26

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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.