Home / 31,455.12-47,182.68-8,081.58

Finding the Fourth Proportional to 31,455.12, 47,182.68 and 8,081.58

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Solution

The fourth proportional to 31,455.12, 47,182.68 and 8,081.58 is: 12,122.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455.12 : 47,182.68 = 8,081.58 : x
  2. Step 2: Convert to fraction form
    31,455.12/47,182.68 = 8,081.58/x
  3. Step 3: Cross multiply
    31,455.12x = 47,182.68 × 8,081.58
  4. Step 4: Simplify right side
    31,455.12x = 381,310,603.03
  5. Step 5: Solve for x
    x = 381,310,603.03/31,455.12
  6. Step 6: Final answer
    x = 12,122.37

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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.