Home / 20,955.06-28,918.53-11,523.87

Finding the Fourth Proportional to 20,955.06, 28,918.53 and 11,523.87

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Solution

The fourth proportional to 20,955.06, 28,918.53 and 11,523.87 is: 15,903.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.06 : 28,918.53 = 11,523.87 : x
  2. Step 2: Convert to fraction form
    20,955.06/28,918.53 = 11,523.87/x
  3. Step 3: Cross multiply
    20,955.06x = 28,918.53 × 11,523.87
  4. Step 4: Simplify right side
    20,955.06x = 333,253,380.31
  5. Step 5: Solve for x
    x = 333,253,380.31/20,955.06
  6. Step 6: Final answer
    x = 15,903.24

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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.