Home / 31,847.28-47,771.40-12,126.93

Finding the Fourth Proportional to 31,847.28, 47,771.40 and 12,126.93

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Solution

The fourth proportional to 31,847.28, 47,771.40 and 12,126.93 is: 18,190.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,847.28 : 47,771.40 = 12,126.93 : x
  2. Step 2: Convert to fraction form
    31,847.28/47,771.40 = 12,126.93/x
  3. Step 3: Cross multiply
    31,847.28x = 47,771.40 × 12,126.93
  4. Step 4: Simplify right side
    31,847.28x = 579,320,423.80
  5. Step 5: Solve for x
    x = 579,320,423.80/31,847.28
  6. Step 6: Final answer
    x = 18,190.58

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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.