Home / 21,789.14-30,075.36-14,236.62

Finding the Fourth Proportional to 21,789.14, 30,075.36 and 14,236.62

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Solution

The fourth proportional to 21,789.14, 30,075.36 and 14,236.62 is: 19,650.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789.14 : 30,075.36 = 14,236.62 : x
  2. Step 2: Convert to fraction form
    21,789.14/30,075.36 = 14,236.62/x
  3. Step 3: Cross multiply
    21,789.14x = 30,075.36 × 14,236.62
  4. Step 4: Simplify right side
    21,789.14x = 428,171,471.68
  5. Step 5: Solve for x
    x = 428,171,471.68/21,789.14
  6. Step 6: Final answer
    x = 19,650.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.