Home / 20,957.80-28,921.44-11,526.34

Finding the Fourth Proportional to 20,957.80, 28,921.44 and 11,526.34

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Solution

The fourth proportional to 20,957.80, 28,921.44 and 11,526.34 is: 15,906.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,957.80 : 28,921.44 = 11,526.34 : x
  2. Step 2: Convert to fraction form
    20,957.80/28,921.44 = 11,526.34/x
  3. Step 3: Cross multiply
    20,957.80x = 28,921.44 × 11,526.34
  4. Step 4: Simplify right side
    20,957.80x = 333,358,350.73
  5. Step 5: Solve for x
    x = 333,358,350.73/20,957.80
  6. Step 6: Final answer
    x = 15,906.17

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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.