Home / 20,455.05-28,224.97-11,957.97

Finding the Fourth Proportional to 20,455.05, 28,224.97 and 11,957.97

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Solution

The fourth proportional to 20,455.05, 28,224.97 and 11,957.97 is: 16,500.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.05 : 28,224.97 = 11,957.97 : x
  2. Step 2: Convert to fraction form
    20,455.05/28,224.97 = 11,957.97/x
  3. Step 3: Cross multiply
    20,455.05x = 28,224.97 × 11,957.97
  4. Step 4: Simplify right side
    20,455.05x = 337,513,344.51
  5. Step 5: Solve for x
    x = 337,513,344.51/20,455.05
  6. Step 6: Final answer
    x = 16,500.25

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1.5x scale

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.