Home / 31,086.48-42,899.28-16,939.28

Finding the Fourth Proportional to 31,086.48, 42,899.28 and 16,939.28

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Solution

The fourth proportional to 31,086.48, 42,899.28 and 16,939.28 is: 23,376.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,086.48 : 42,899.28 = 16,939.28 : x
  2. Step 2: Convert to fraction form
    31,086.48/42,899.28 = 16,939.28/x
  3. Step 3: Cross multiply
    31,086.48x = 42,899.28 × 16,939.28
  4. Step 4: Simplify right side
    31,086.48x = 726,682,915.72
  5. Step 5: Solve for x
    x = 726,682,915.72/31,086.48
  6. Step 6: Final answer
    x = 23,376.17

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.