Home / 20,693.40-28,557.56-11,262.28

Finding the Fourth Proportional to 20,693.40, 28,557.56 and 11,262.28

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Solution

The fourth proportional to 20,693.40, 28,557.56 and 11,262.28 is: 15,542.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.40 : 28,557.56 = 11,262.28 : x
  2. Step 2: Convert to fraction form
    20,693.40/28,557.56 = 11,262.28/x
  3. Step 3: Cross multiply
    20,693.40x = 28,557.56 × 11,262.28
  4. Step 4: Simplify right side
    20,693.40x = 321,623,236.84
  5. Step 5: Solve for x
    x = 321,623,236.84/20,693.40
  6. Step 6: Final answer
    x = 15,542.31

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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.