Home / 13,318.54-19,977.85-3,457.90

Finding the Fourth Proportional to 13,318.54, 19,977.85 and 3,457.90

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Solution

The fourth proportional to 13,318.54, 19,977.85 and 3,457.90 is: 5,186.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.54 : 19,977.85 = 3,457.90 : x
  2. Step 2: Convert to fraction form
    13,318.54/19,977.85 = 3,457.90/x
  3. Step 3: Cross multiply
    13,318.54x = 19,977.85 × 3,457.90
  4. Step 4: Simplify right side
    13,318.54x = 69,081,407.52
  5. Step 5: Solve for x
    x = 69,081,407.52/13,318.54
  6. Step 6: Final answer
    x = 5,186.86

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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.