Home / 18,529.80-27,762.36-15,429.75

Finding the Fourth Proportional to 18,529.80, 27,762.36 and 15,429.75

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Solution

The fourth proportional to 18,529.80, 27,762.36 and 15,429.75 is: 23,117.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,529.80 : 27,762.36 = 15,429.75 : x
  2. Step 2: Convert to fraction form
    18,529.80/27,762.36 = 15,429.75/x
  3. Step 3: Cross multiply
    18,529.80x = 27,762.36 × 15,429.75
  4. Step 4: Simplify right side
    18,529.80x = 428,366,274.21
  5. Step 5: Solve for x
    x = 428,366,274.21/18,529.80
  6. Step 6: Final answer
    x = 23,117.70

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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.