Home / 10,928.40-16,393.40-3,137.28

Finding the Fourth Proportional to 10,928.40, 16,393.40 and 3,137.28

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Solution

The fourth proportional to 10,928.40, 16,393.40 and 3,137.28 is: 4,706.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,928.40 : 16,393.40 = 3,137.28 : x
  2. Step 2: Convert to fraction form
    10,928.40/16,393.40 = 3,137.28/x
  3. Step 3: Cross multiply
    10,928.40x = 16,393.40 × 3,137.28
  4. Step 4: Simplify right side
    10,928.40x = 51,430,685.95
  5. Step 5: Solve for x
    x = 51,430,685.95/10,928.40
  6. Step 6: Final answer
    x = 4,706.15

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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.