Home / 20,253.44-27,962.40-15,528.64

Finding the Fourth Proportional to 20,253.44, 27,962.40 and 15,528.64

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Solution

The fourth proportional to 20,253.44, 27,962.40 and 15,528.64 is: 21,439.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,253.44 : 27,962.40 = 15,528.64 : x
  2. Step 2: Convert to fraction form
    20,253.44/27,962.40 = 15,528.64/x
  3. Step 3: Cross multiply
    20,253.44x = 27,962.40 × 15,528.64
  4. Step 4: Simplify right side
    20,253.44x = 434,218,043.14
  5. Step 5: Solve for x
    x = 434,218,043.14/20,253.44
  6. Step 6: Final answer
    x = 21,439.22

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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.