Home / 10,513.73-15,772.90-3,118.77

Finding the Fourth Proportional to 10,513.73, 15,772.90 and 3,118.77

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Solution

The fourth proportional to 10,513.73, 15,772.90 and 3,118.77 is: 4,678.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,513.73 : 15,772.90 = 3,118.77 : x
  2. Step 2: Convert to fraction form
    10,513.73/15,772.90 = 3,118.77/x
  3. Step 3: Cross multiply
    10,513.73x = 15,772.90 × 3,118.77
  4. Step 4: Simplify right side
    10,513.73x = 49,192,047.33
  5. Step 5: Solve for x
    x = 49,192,047.33/10,513.73
  6. Step 6: Final answer
    x = 4,678.84

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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.