Home / 31,821.51-47,728.62-8,449.77

Finding the Fourth Proportional to 31,821.51, 47,728.62 and 8,449.77

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Solution

The fourth proportional to 31,821.51, 47,728.62 and 8,449.77 is: 12,673.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,821.51 : 47,728.62 = 8,449.77 : x
  2. Step 2: Convert to fraction form
    31,821.51/47,728.62 = 8,449.77/x
  3. Step 3: Cross multiply
    31,821.51x = 47,728.62 × 8,449.77
  4. Step 4: Simplify right side
    31,821.51x = 403,295,861.42
  5. Step 5: Solve for x
    x = 403,295,861.42/31,821.51
  6. Step 6: Final answer
    x = 12,673.69

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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.