Home / 12,605.29-18,906.58-3,840.28

Finding the Fourth Proportional to 12,605.29, 18,906.58 and 3,840.28

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Solution

The fourth proportional to 12,605.29, 18,906.58 and 3,840.28 is: 5,760.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,605.29 : 18,906.58 = 3,840.28 : x
  2. Step 2: Convert to fraction form
    12,605.29/18,906.58 = 3,840.28/x
  3. Step 3: Cross multiply
    12,605.29x = 18,906.58 × 3,840.28
  4. Step 4: Simplify right side
    12,605.29x = 72,606,561.04
  5. Step 5: Solve for x
    x = 72,606,561.04/12,605.29
  6. Step 6: Final answer
    x = 5,760.01

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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.