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Finding the Fourth Proportional to 28,495.94, 42,745.05 and 10,724.81

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Solution

The fourth proportional to 28,495.94, 42,745.05 and 10,724.81 is: 16,087.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,495.94 : 42,745.05 = 10,724.81 : x
  2. Step 2: Convert to fraction form
    28,495.94/42,745.05 = 10,724.81/x
  3. Step 3: Cross multiply
    28,495.94x = 42,745.05 × 10,724.81
  4. Step 4: Simplify right side
    28,495.94x = 458,432,325.97
  5. Step 5: Solve for x
    x = 458,432,325.97/28,495.94
  6. Step 6: Final answer
    x = 16,087.64

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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.