Home / 30,661.62-45,982.71-13,126.74

Finding the Fourth Proportional to 30,661.62, 45,982.71 and 13,126.74

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Solution

The fourth proportional to 30,661.62, 45,982.71 and 13,126.74 is: 19,685.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,661.62 : 45,982.71 = 13,126.74 : x
  2. Step 2: Convert to fraction form
    30,661.62/45,982.71 = 13,126.74/x
  3. Step 3: Cross multiply
    30,661.62x = 45,982.71 × 13,126.74
  4. Step 4: Simplify right side
    30,661.62x = 603,603,078.67
  5. Step 5: Solve for x
    x = 603,603,078.67/30,661.62
  6. Step 6: Final answer
    x = 19,685.95

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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.