Home / 15,563.75-21,423.96-11,780.24

Finding the Fourth Proportional to 15,563.75, 21,423.96 and 11,780.24

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Solution

The fourth proportional to 15,563.75, 21,423.96 and 11,780.24 is: 16,215.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,563.75 : 21,423.96 = 11,780.24 : x
  2. Step 2: Convert to fraction form
    15,563.75/21,423.96 = 11,780.24/x
  3. Step 3: Cross multiply
    15,563.75x = 21,423.96 × 11,780.24
  4. Step 4: Simplify right side
    15,563.75x = 252,379,283.43
  5. Step 5: Solve for x
    x = 252,379,283.43/15,563.75
  6. Step 6: Final answer
    x = 16,215.85

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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.