Home / 12,338.47-18,507.92-4,018.45

Finding the Fourth Proportional to 12,338.47, 18,507.92 and 4,018.45

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Solution

The fourth proportional to 12,338.47, 18,507.92 and 4,018.45 is: 6,027.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,338.47 : 18,507.92 = 4,018.45 : x
  2. Step 2: Convert to fraction form
    12,338.47/18,507.92 = 4,018.45/x
  3. Step 3: Cross multiply
    12,338.47x = 18,507.92 × 4,018.45
  4. Step 4: Simplify right side
    12,338.47x = 74,373,151.12
  5. Step 5: Solve for x
    x = 74,373,151.12/12,338.47
  6. Step 6: Final answer
    x = 6,027.75

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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.