Home / 28,782.81-43,145.06-13,979.25

Finding the Fourth Proportional to 28,782.81, 43,145.06 and 13,979.25

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Solution

The fourth proportional to 28,782.81, 43,145.06 and 13,979.25 is: 20,954.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,782.81 : 43,145.06 = 13,979.25 : x
  2. Step 2: Convert to fraction form
    28,782.81/43,145.06 = 13,979.25/x
  3. Step 3: Cross multiply
    28,782.81x = 43,145.06 × 13,979.25
  4. Step 4: Simplify right side
    28,782.81x = 603,135,510.11
  5. Step 5: Solve for x
    x = 603,135,510.11/28,782.81
  6. Step 6: Final answer
    x = 20,954.71

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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.