Home / 31,905.75-47,888.16-16,121.89

Finding the Fourth Proportional to 31,905.75, 47,888.16 and 16,121.89

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Solution

The fourth proportional to 31,905.75, 47,888.16 and 16,121.89 is: 24,197.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,905.75 : 47,888.16 = 16,121.89 : x
  2. Step 2: Convert to fraction form
    31,905.75/47,888.16 = 16,121.89/x
  3. Step 3: Cross multiply
    31,905.75x = 47,888.16 × 16,121.89
  4. Step 4: Simplify right side
    31,905.75x = 772,047,468.54
  5. Step 5: Solve for x
    x = 772,047,468.54/31,905.75
  6. Step 6: Final answer
    x = 24,197.75

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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.