Home / 18,783.48-28,184.94-13,631.88

Finding the Fourth Proportional to 18,783.48, 28,184.94 and 13,631.88

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Solution

The fourth proportional to 18,783.48, 28,184.94 and 13,631.88 is: 20,454.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783.48 : 28,184.94 = 13,631.88 : x
  2. Step 2: Convert to fraction form
    18,783.48/28,184.94 = 13,631.88/x
  3. Step 3: Cross multiply
    18,783.48x = 28,184.94 × 13,631.88
  4. Step 4: Simplify right side
    18,783.48x = 384,213,719.89
  5. Step 5: Solve for x
    x = 384,213,719.89/18,783.48
  6. Step 6: Final answer
    x = 20,454.87

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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.