Home / 28,513.28-42,767.19-8,786.54

Finding the Fourth Proportional to 28,513.28, 42,767.19 and 8,786.54

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Solution

The fourth proportional to 28,513.28, 42,767.19 and 8,786.54 is: 13,178.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,513.28 : 42,767.19 = 8,786.54 : x
  2. Step 2: Convert to fraction form
    28,513.28/42,767.19 = 8,786.54/x
  3. Step 3: Cross multiply
    28,513.28x = 42,767.19 × 8,786.54
  4. Step 4: Simplify right side
    28,513.28x = 375,775,411.79
  5. Step 5: Solve for x
    x = 375,775,411.79/28,513.28
  6. Step 6: Final answer
    x = 13,178.96

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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.