Home / 18,221.52-25,155.18-12,284.40

Finding the Fourth Proportional to 18,221.52, 25,155.18 and 12,284.40

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Solution

The fourth proportional to 18,221.52, 25,155.18 and 12,284.40 is: 16,958.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,221.52 : 25,155.18 = 12,284.40 : x
  2. Step 2: Convert to fraction form
    18,221.52/25,155.18 = 12,284.40/x
  3. Step 3: Cross multiply
    18,221.52x = 25,155.18 × 12,284.40
  4. Step 4: Simplify right side
    18,221.52x = 309,016,293.19
  5. Step 5: Solve for x
    x = 309,016,293.19/18,221.52
  6. Step 6: Final answer
    x = 16,958.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.