Home / 18,784.28-28,165.88-12,867.85

Finding the Fourth Proportional to 18,784.28, 28,165.88 and 12,867.85

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Solution

The fourth proportional to 18,784.28, 28,165.88 and 12,867.85 is: 19,294.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,784.28 : 28,165.88 = 12,867.85 : x
  2. Step 2: Convert to fraction form
    18,784.28/28,165.88 = 12,867.85/x
  3. Step 3: Cross multiply
    18,784.28x = 28,165.88 × 12,867.85
  4. Step 4: Simplify right side
    18,784.28x = 362,434,318.96
  5. Step 5: Solve for x
    x = 362,434,318.96/18,784.28
  6. Step 6: Final answer
    x = 19,294.56

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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.