Home / 18,800.42-25,930.78-13,500.68

Finding the Fourth Proportional to 18,800.42, 25,930.78 and 13,500.68

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Solution

The fourth proportional to 18,800.42, 25,930.78 and 13,500.68 is: 18,621.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,800.42 : 25,930.78 = 13,500.68 : x
  2. Step 2: Convert to fraction form
    18,800.42/25,930.78 = 13,500.68/x
  3. Step 3: Cross multiply
    18,800.42x = 25,930.78 × 13,500.68
  4. Step 4: Simplify right side
    18,800.42x = 350,082,999.52
  5. Step 5: Solve for x
    x = 350,082,999.52/18,800.42
  6. Step 6: Final answer
    x = 18,621.03

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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.