Home / 31,379.28-47,059.44-12,653.28

Finding the Fourth Proportional to 31,379.28, 47,059.44 and 12,653.28

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Solution

The fourth proportional to 31,379.28, 47,059.44 and 12,653.28 is: 18,976.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,379.28 : 47,059.44 = 12,653.28 : x
  2. Step 2: Convert to fraction form
    31,379.28/47,059.44 = 12,653.28/x
  3. Step 3: Cross multiply
    31,379.28x = 47,059.44 × 12,653.28
  4. Step 4: Simplify right side
    31,379.28x = 595,456,270.96
  5. Step 5: Solve for x
    x = 595,456,270.96/31,379.28
  6. Step 6: Final answer
    x = 18,976.10

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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.