Home / 38,986.56-58,466.24-12,686.40

Finding the Fourth Proportional to 38,986.56, 58,466.24 and 12,686.40

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Solution

The fourth proportional to 38,986.56, 58,466.24 and 12,686.40 is: 19,025.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,986.56 : 58,466.24 = 12,686.40 : x
  2. Step 2: Convert to fraction form
    38,986.56/58,466.24 = 12,686.40/x
  3. Step 3: Cross multiply
    38,986.56x = 58,466.24 × 12,686.40
  4. Step 4: Simplify right side
    38,986.56x = 741,726,107.14
  5. Step 5: Solve for x
    x = 741,726,107.14/38,986.56
  6. Step 6: Final answer
    x = 19,025.17

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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.