Home / 18,954.09-28,438.47-7,857.93

Finding the Fourth Proportional to 18,954.09, 28,438.47 and 7,857.93

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Solution

The fourth proportional to 18,954.09, 28,438.47 and 7,857.93 is: 11,789.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,954.09 : 28,438.47 = 7,857.93 : x
  2. Step 2: Convert to fraction form
    18,954.09/28,438.47 = 7,857.93/x
  3. Step 3: Cross multiply
    18,954.09x = 28,438.47 × 7,857.93
  4. Step 4: Simplify right side
    18,954.09x = 223,467,506.57
  5. Step 5: Solve for x
    x = 223,467,506.57/18,954.09
  6. Step 6: Final answer
    x = 11,789.94

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1.5x scale

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.