Home / 31,724.75-47,589.36-12,749.40

Finding the Fourth Proportional to 31,724.75, 47,589.36 and 12,749.40

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Solution

The fourth proportional to 31,724.75, 47,589.36 and 12,749.40 is: 19,125.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,724.75 : 47,589.36 = 12,749.40 : x
  2. Step 2: Convert to fraction form
    31,724.75/47,589.36 = 12,749.40/x
  3. Step 3: Cross multiply
    31,724.75x = 47,589.36 × 12,749.40
  4. Step 4: Simplify right side
    31,724.75x = 606,735,786.38
  5. Step 5: Solve for x
    x = 606,735,786.38/31,724.75
  6. Step 6: Final answer
    x = 19,125.00

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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.