Home / 20,450.84-28,222.95-12,496.64

Finding the Fourth Proportional to 20,450.84, 28,222.95 and 12,496.64

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Solution

The fourth proportional to 20,450.84, 28,222.95 and 12,496.64 is: 17,245.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.84 : 28,222.95 = 12,496.64 : x
  2. Step 2: Convert to fraction form
    20,450.84/28,222.95 = 12,496.64/x
  3. Step 3: Cross multiply
    20,450.84x = 28,222.95 × 12,496.64
  4. Step 4: Simplify right side
    20,450.84x = 352,692,045.89
  5. Step 5: Solve for x
    x = 352,692,045.89/20,450.84
  6. Step 6: Final answer
    x = 17,245.85

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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.