Home / 20,914.56-28,864.38-11,962.88

Finding the Fourth Proportional to 20,914.56, 28,864.38 and 11,962.88

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Solution

The fourth proportional to 20,914.56, 28,864.38 and 11,962.88 is: 16,510.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.56 : 28,864.38 = 11,962.88 : x
  2. Step 2: Convert to fraction form
    20,914.56/28,864.38 = 11,962.88/x
  3. Step 3: Cross multiply
    20,914.56x = 28,864.38 × 11,962.88
  4. Step 4: Simplify right side
    20,914.56x = 345,301,114.21
  5. Step 5: Solve for x
    x = 345,301,114.21/20,914.56
  6. Step 6: Final answer
    x = 16,510.08

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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.