Home / 18,276.80-27,416.01-5,128.88

Finding the Fourth Proportional to 18,276.80, 27,416.01 and 5,128.88

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Solution

The fourth proportional to 18,276.80, 27,416.01 and 5,128.88 is: 7,693.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,276.80 : 27,416.01 = 5,128.88 : x
  2. Step 2: Convert to fraction form
    18,276.80/27,416.01 = 5,128.88/x
  3. Step 3: Cross multiply
    18,276.80x = 27,416.01 × 5,128.88
  4. Step 4: Simplify right side
    18,276.80x = 140,613,425.37
  5. Step 5: Solve for x
    x = 140,613,425.37/18,276.80
  6. Step 6: Final answer
    x = 7,693.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.