Home / 13,779.48-20,679.03-5,461.30

Finding the Fourth Proportional to 13,779.48, 20,679.03 and 5,461.30

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Solution

The fourth proportional to 13,779.48, 20,679.03 and 5,461.30 is: 8,195.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.48 : 20,679.03 = 5,461.30 : x
  2. Step 2: Convert to fraction form
    13,779.48/20,679.03 = 5,461.30/x
  3. Step 3: Cross multiply
    13,779.48x = 20,679.03 × 5,461.30
  4. Step 4: Simplify right side
    13,779.48x = 112,934,386.54
  5. Step 5: Solve for x
    x = 112,934,386.54/13,779.48
  6. Step 6: Final answer
    x = 8,195.84

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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.