Home / 18,754.14-28,131.24-5,615.76

Finding the Fourth Proportional to 18,754.14, 28,131.24 and 5,615.76

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Solution

The fourth proportional to 18,754.14, 28,131.24 and 5,615.76 is: 8,423.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.14 : 28,131.24 = 5,615.76 : x
  2. Step 2: Convert to fraction form
    18,754.14/28,131.24 = 5,615.76/x
  3. Step 3: Cross multiply
    18,754.14x = 28,131.24 × 5,615.76
  4. Step 4: Simplify right side
    18,754.14x = 157,978,292.34
  5. Step 5: Solve for x
    x = 157,978,292.34/18,754.14
  6. Step 6: Final answer
    x = 8,423.65

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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.