Home / 18,930.84-28,359.87-10,585.55

Finding the Fourth Proportional to 18,930.84, 28,359.87 and 10,585.55

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Solution

The fourth proportional to 18,930.84, 28,359.87 and 10,585.55 is: 15,857.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930.84 : 28,359.87 = 10,585.55 : x
  2. Step 2: Convert to fraction form
    18,930.84/28,359.87 = 10,585.55/x
  3. Step 3: Cross multiply
    18,930.84x = 28,359.87 × 10,585.55
  4. Step 4: Simplify right side
    18,930.84x = 300,204,821.88
  5. Step 5: Solve for x
    x = 300,204,821.88/18,930.84
  6. Step 6: Final answer
    x = 15,857.98

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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.