Home / 12,607.52-18,905.78-3,840.38

Finding the Fourth Proportional to 12,607.52, 18,905.78 and 3,840.38

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Solution

The fourth proportional to 12,607.52, 18,905.78 and 3,840.38 is: 5,758.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,607.52 : 18,905.78 = 3,840.38 : x
  2. Step 2: Convert to fraction form
    12,607.52/18,905.78 = 3,840.38/x
  3. Step 3: Cross multiply
    12,607.52x = 18,905.78 × 3,840.38
  4. Step 4: Simplify right side
    12,607.52x = 72,605,379.40
  5. Step 5: Solve for x
    x = 72,605,379.40/12,607.52
  6. Step 6: Final answer
    x = 5,758.89

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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.