Home / 21,267.87-31,901.80-10,168.50

Finding the Fourth Proportional to 21,267.87, 31,901.80 and 10,168.50

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Solution

The fourth proportional to 21,267.87, 31,901.80 and 10,168.50 is: 15,252.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,267.87 : 31,901.80 = 10,168.50 : x
  2. Step 2: Convert to fraction form
    21,267.87/31,901.80 = 10,168.50/x
  3. Step 3: Cross multiply
    21,267.87x = 31,901.80 × 10,168.50
  4. Step 4: Simplify right side
    21,267.87x = 324,393,453.30
  5. Step 5: Solve for x
    x = 324,393,453.30/21,267.87
  6. Step 6: Final answer
    x = 15,252.75

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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.