Home / 31,751.08-47,631.48-8,379.36

Finding the Fourth Proportional to 31,751.08, 47,631.48 and 8,379.36

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Solution

The fourth proportional to 31,751.08, 47,631.48 and 8,379.36 is: 12,570.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,751.08 : 47,631.48 = 8,379.36 : x
  2. Step 2: Convert to fraction form
    31,751.08/47,631.48 = 8,379.36/x
  3. Step 3: Cross multiply
    31,751.08x = 47,631.48 × 8,379.36
  4. Step 4: Simplify right side
    31,751.08x = 399,121,318.25
  5. Step 5: Solve for x
    x = 399,121,318.25/31,751.08
  6. Step 6: Final answer
    x = 12,570.32

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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.