Home / 13,238.57-19,860.31-4,354.40

Finding the Fourth Proportional to 13,238.57, 19,860.31 and 4,354.40

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Solution

The fourth proportional to 13,238.57, 19,860.31 and 4,354.40 is: 6,532.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238.57 : 19,860.31 = 4,354.40 : x
  2. Step 2: Convert to fraction form
    13,238.57/19,860.31 = 4,354.40/x
  3. Step 3: Cross multiply
    13,238.57x = 19,860.31 × 4,354.40
  4. Step 4: Simplify right side
    13,238.57x = 86,479,623.68
  5. Step 5: Solve for x
    x = 86,479,623.68/13,238.57
  6. Step 6: Final answer
    x = 6,532.40

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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.