Home / 28,358.73-42,544.43-8,638.82

Finding the Fourth Proportional to 28,358.73, 42,544.43 and 8,638.82

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Solution

The fourth proportional to 28,358.73, 42,544.43 and 8,638.82 is: 12,960.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,358.73 : 42,544.43 = 8,638.82 : x
  2. Step 2: Convert to fraction form
    28,358.73/42,544.43 = 8,638.82/x
  3. Step 3: Cross multiply
    28,358.73x = 42,544.43 × 8,638.82
  4. Step 4: Simplify right side
    28,358.73x = 367,533,416.86
  5. Step 5: Solve for x
    x = 367,533,416.86/28,358.73
  6. Step 6: Final answer
    x = 12,960.15

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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.