Home / 31,814.30-47,727.60-12,091.32

Finding the Fourth Proportional to 31,814.30, 47,727.60 and 12,091.32

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Solution

The fourth proportional to 31,814.30, 47,727.60 and 12,091.32 is: 18,139.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,814.30 : 47,727.60 = 12,091.32 : x
  2. Step 2: Convert to fraction form
    31,814.30/47,727.60 = 12,091.32/x
  3. Step 3: Cross multiply
    31,814.30x = 47,727.60 × 12,091.32
  4. Step 4: Simplify right side
    31,814.30x = 577,089,782.72
  5. Step 5: Solve for x
    x = 577,089,782.72/31,814.30
  6. Step 6: Final answer
    x = 18,139.32

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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.