Home / 18,738.47-28,097.96-6,889.20

Finding the Fourth Proportional to 18,738.47, 28,097.96 and 6,889.20

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Solution

The fourth proportional to 18,738.47, 28,097.96 and 6,889.20 is: 10,330.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,738.47 : 28,097.96 = 6,889.20 : x
  2. Step 2: Convert to fraction form
    18,738.47/28,097.96 = 6,889.20/x
  3. Step 3: Cross multiply
    18,738.47x = 28,097.96 × 6,889.20
  4. Step 4: Simplify right side
    18,738.47x = 193,572,431.59
  5. Step 5: Solve for x
    x = 193,572,431.59/18,738.47
  6. Step 6: Final answer
    x = 10,330.22

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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.