Home / 31,884.56-47,807.40-12,142.03

Finding the Fourth Proportional to 31,884.56, 47,807.40 and 12,142.03

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Solution

The fourth proportional to 31,884.56, 47,807.40 and 12,142.03 is: 18,205.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,884.56 : 47,807.40 = 12,142.03 : x
  2. Step 2: Convert to fraction form
    31,884.56/47,807.40 = 12,142.03/x
  3. Step 3: Cross multiply
    31,884.56x = 47,807.40 × 12,142.03
  4. Step 4: Simplify right side
    31,884.56x = 580,478,885.02
  5. Step 5: Solve for x
    x = 580,478,885.02/31,884.56
  6. Step 6: Final answer
    x = 18,205.64

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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.