Home / 28,091.81-38,762.09-16,605.12

Finding the Fourth Proportional to 28,091.81, 38,762.09 and 16,605.12

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Solution

The fourth proportional to 28,091.81, 38,762.09 and 16,605.12 is: 22,912.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,091.81 : 38,762.09 = 16,605.12 : x
  2. Step 2: Convert to fraction form
    28,091.81/38,762.09 = 16,605.12/x
  3. Step 3: Cross multiply
    28,091.81x = 38,762.09 × 16,605.12
  4. Step 4: Simplify right side
    28,091.81x = 643,649,072.88
  5. Step 5: Solve for x
    x = 643,649,072.88/28,091.81
  6. Step 6: Final answer
    x = 22,912.34

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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.