Home / 31,551.85-47,313.96-11,816.56

Finding the Fourth Proportional to 31,551.85, 47,313.96 and 11,816.56

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Solution

The fourth proportional to 31,551.85, 47,313.96 and 11,816.56 is: 17,719.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,551.85 : 47,313.96 = 11,816.56 : x
  2. Step 2: Convert to fraction form
    31,551.85/47,313.96 = 11,816.56/x
  3. Step 3: Cross multiply
    31,551.85x = 47,313.96 × 11,816.56
  4. Step 4: Simplify right side
    31,551.85x = 559,088,262.01
  5. Step 5: Solve for x
    x = 559,088,262.01/31,551.85
  6. Step 6: Final answer
    x = 17,719.67

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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.