Home / 20,740.92-28,623.06-11,310

Finding the Fourth Proportional to 20,740.92, 28,623.06 and 11,310

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Solution

The fourth proportional to 20,740.92, 28,623.06 and 11,310 is: 15,608.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.92 : 28,623.06 = 11,310 : x
  2. Step 2: Convert to fraction form
    20,740.92/28,623.06 = 11,310/x
  3. Step 3: Cross multiply
    20,740.92x = 28,623.06 × 11,310
  4. Step 4: Simplify right side
    20,740.92x = 323,726,808.60
  5. Step 5: Solve for x
    x = 323,726,808.60/20,740.92
  6. Step 6: Final answer
    x = 15,608.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.