Home / 13,779.36-20,664.54-5,457.87

Finding the Fourth Proportional to 13,779.36, 20,664.54 and 5,457.87

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Solution

The fourth proportional to 13,779.36, 20,664.54 and 5,457.87 is: 8,185.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.36 : 20,664.54 = 5,457.87 : x
  2. Step 2: Convert to fraction form
    13,779.36/20,664.54 = 5,457.87/x
  3. Step 3: Cross multiply
    13,779.36x = 20,664.54 × 5,457.87
  4. Step 4: Simplify right side
    13,779.36x = 112,784,372.93
  5. Step 5: Solve for x
    x = 112,784,372.93/13,779.36
  6. Step 6: Final answer
    x = 8,185.02

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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.