Home / 18,432.84-27,639-10,939.44

Finding the Fourth Proportional to 18,432.84, 27,639 and 10,939.44

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Solution

The fourth proportional to 18,432.84, 27,639 and 10,939.44 is: 16,403.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,432.84 : 27,639 = 10,939.44 : x
  2. Step 2: Convert to fraction form
    18,432.84/27,639 = 10,939.44/x
  3. Step 3: Cross multiply
    18,432.84x = 27,639 × 10,939.44
  4. Step 4: Simplify right side
    18,432.84x = 302,355,182.16
  5. Step 5: Solve for x
    x = 302,355,182.16/18,432.84
  6. Step 6: Final answer
    x = 16,403.07

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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.