Home / 13,315.18-19,971.06-3,455.14

Finding the Fourth Proportional to 13,315.18, 19,971.06 and 3,455.14

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Solution

The fourth proportional to 13,315.18, 19,971.06 and 3,455.14 is: 5,182.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.18 : 19,971.06 = 3,455.14 : x
  2. Step 2: Convert to fraction form
    13,315.18/19,971.06 = 3,455.14/x
  3. Step 3: Cross multiply
    13,315.18x = 19,971.06 × 3,455.14
  4. Step 4: Simplify right side
    13,315.18x = 69,002,808.25
  5. Step 5: Solve for x
    x = 69,002,808.25/13,315.18
  6. Step 6: Final answer
    x = 5,182.27

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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.