Home / 20,740.98-28,623.23-11,787.96

Finding the Fourth Proportional to 20,740.98, 28,623.23 and 11,787.96

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Solution

The fourth proportional to 20,740.98, 28,623.23 and 11,787.96 is: 16,267.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.98 : 28,623.23 = 11,787.96 : x
  2. Step 2: Convert to fraction form
    20,740.98/28,623.23 = 11,787.96/x
  3. Step 3: Cross multiply
    20,740.98x = 28,623.23 × 11,787.96
  4. Step 4: Simplify right side
    20,740.98x = 337,409,431.37
  5. Step 5: Solve for x
    x = 337,409,431.37/20,740.98
  6. Step 6: Final answer
    x = 16,267.77

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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.