Home / 28,912.56-39,900.30-16,338.12

Finding the Fourth Proportional to 28,912.56, 39,900.30 and 16,338.12

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Solution

The fourth proportional to 28,912.56, 39,900.30 and 16,338.12 is: 22,547.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.56 : 39,900.30 = 16,338.12 : x
  2. Step 2: Convert to fraction form
    28,912.56/39,900.30 = 16,338.12/x
  3. Step 3: Cross multiply
    28,912.56x = 39,900.30 × 16,338.12
  4. Step 4: Simplify right side
    28,912.56x = 651,895,889.44
  5. Step 5: Solve for x
    x = 651,895,889.44/28,912.56
  6. Step 6: Final answer
    x = 22,547.15

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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.