Home / 20,529.48-28,330.56-11,577.06

Finding the Fourth Proportional to 20,529.48, 28,330.56 and 11,577.06

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Solution

The fourth proportional to 20,529.48, 28,330.56 and 11,577.06 is: 15,976.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.48 : 28,330.56 = 11,577.06 : x
  2. Step 2: Convert to fraction form
    20,529.48/28,330.56 = 11,577.06/x
  3. Step 3: Cross multiply
    20,529.48x = 28,330.56 × 11,577.06
  4. Step 4: Simplify right side
    20,529.48x = 327,984,480.24
  5. Step 5: Solve for x
    x = 327,984,480.24/20,529.48
  6. Step 6: Final answer
    x = 15,976.27

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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.