Home / 21,276.74-31,943.39-18,176.67

Finding the Fourth Proportional to 21,276.74, 31,943.39 and 18,176.67

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Solution

The fourth proportional to 21,276.74, 31,943.39 and 18,176.67 is: 27,289.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.74 : 31,943.39 = 18,176.67 : x
  2. Step 2: Convert to fraction form
    21,276.74/31,943.39 = 18,176.67/x
  3. Step 3: Cross multiply
    21,276.74x = 31,943.39 × 18,176.67
  4. Step 4: Simplify right side
    21,276.74x = 580,624,367.83
  5. Step 5: Solve for x
    x = 580,624,367.83/21,276.74
  6. Step 6: Final answer
    x = 27,289.16

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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.