Home / 18,639.40-27,836.45-16,181.80

Finding the Fourth Proportional to 18,639.40, 27,836.45 and 16,181.80

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Solution

The fourth proportional to 18,639.40, 27,836.45 and 16,181.80 is: 24,166.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.40 : 27,836.45 = 16,181.80 : x
  2. Step 2: Convert to fraction form
    18,639.40/27,836.45 = 16,181.80/x
  3. Step 3: Cross multiply
    18,639.40x = 27,836.45 × 16,181.80
  4. Step 4: Simplify right side
    18,639.40x = 450,443,866.61
  5. Step 5: Solve for x
    x = 450,443,866.61/18,639.40
  6. Step 6: Final answer
    x = 24,166.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.