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Finding the Fourth Proportional to 28,702.41, 43,053.21 and 13,912.62

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Solution

The fourth proportional to 28,702.41, 43,053.21 and 13,912.62 is: 20,868.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,702.41 : 43,053.21 = 13,912.62 : x
  2. Step 2: Convert to fraction form
    28,702.41/43,053.21 = 13,912.62/x
  3. Step 3: Cross multiply
    28,702.41x = 43,053.21 × 13,912.62
  4. Step 4: Simplify right side
    28,702.41x = 598,982,950.51
  5. Step 5: Solve for x
    x = 598,982,950.51/28,702.41
  6. Step 6: Final answer
    x = 20,868.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.