Home / 18,940.17-28,390.55-10,607.97

Finding the Fourth Proportional to 18,940.17, 28,390.55 and 10,607.97

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Solution

The fourth proportional to 18,940.17, 28,390.55 and 10,607.97 is: 15,900.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,940.17 : 28,390.55 = 10,607.97 : x
  2. Step 2: Convert to fraction form
    18,940.17/28,390.55 = 10,607.97/x
  3. Step 3: Cross multiply
    18,940.17x = 28,390.55 × 10,607.97
  4. Step 4: Simplify right side
    18,940.17x = 301,166,049.64
  5. Step 5: Solve for x
    x = 301,166,049.64/18,940.17
  6. Step 6: Final answer
    x = 15,900.92

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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.