Home / 28,786.79-43,184.81-12,149.29

Finding the Fourth Proportional to 28,786.79, 43,184.81 and 12,149.29

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Solution

The fourth proportional to 28,786.79, 43,184.81 and 12,149.29 is: 18,225.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,786.79 : 43,184.81 = 12,149.29 : x
  2. Step 2: Convert to fraction form
    28,786.79/43,184.81 = 12,149.29/x
  3. Step 3: Cross multiply
    28,786.79x = 43,184.81 × 12,149.29
  4. Step 4: Simplify right side
    28,786.79x = 524,664,864.64
  5. Step 5: Solve for x
    x = 524,664,864.64/28,786.79
  6. Step 6: Final answer
    x = 18,225.89

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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.