Home / 20,392.38-30,584.93-12,974.81

Finding the Fourth Proportional to 20,392.38, 30,584.93 and 12,974.81

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Solution

The fourth proportional to 20,392.38, 30,584.93 and 12,974.81 is: 19,459.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392.38 : 30,584.93 = 12,974.81 : x
  2. Step 2: Convert to fraction form
    20,392.38/30,584.93 = 12,974.81/x
  3. Step 3: Cross multiply
    20,392.38x = 30,584.93 × 12,974.81
  4. Step 4: Simplify right side
    20,392.38x = 396,833,437.81
  5. Step 5: Solve for x
    x = 396,833,437.81/20,392.38
  6. Step 6: Final answer
    x = 19,459.89

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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.