Home / 28,653.51-39,541.20-15,905.94

Finding the Fourth Proportional to 28,653.51, 39,541.20 and 15,905.94

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Solution

The fourth proportional to 28,653.51, 39,541.20 and 15,905.94 is: 21,949.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,653.51 : 39,541.20 = 15,905.94 : x
  2. Step 2: Convert to fraction form
    28,653.51/39,541.20 = 15,905.94/x
  3. Step 3: Cross multiply
    28,653.51x = 39,541.20 × 15,905.94
  4. Step 4: Simplify right side
    28,653.51x = 628,939,954.73
  5. Step 5: Solve for x
    x = 628,939,954.73/28,653.51
  6. Step 6: Final answer
    x = 21,949.84

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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.