Home / 22,149.87-30,567.40-12,078.74

Finding the Fourth Proportional to 22,149.87, 30,567.40 and 12,078.74

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Solution

The fourth proportional to 22,149.87, 30,567.40 and 12,078.74 is: 16,668.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,149.87 : 30,567.40 = 12,078.74 : x
  2. Step 2: Convert to fraction form
    22,149.87/30,567.40 = 12,078.74/x
  3. Step 3: Cross multiply
    22,149.87x = 30,567.40 × 12,078.74
  4. Step 4: Simplify right side
    22,149.87x = 369,215,494.04
  5. Step 5: Solve for x
    x = 369,215,494.04/22,149.87
  6. Step 6: Final answer
    x = 16,668.97

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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.