Home / 13,845.16-20,779.56-5,531.04

Finding the Fourth Proportional to 13,845.16, 20,779.56 and 5,531.04

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Solution

The fourth proportional to 13,845.16, 20,779.56 and 5,531.04 is: 8,301.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,845.16 : 20,779.56 = 5,531.04 : x
  2. Step 2: Convert to fraction form
    13,845.16/20,779.56 = 5,531.04/x
  3. Step 3: Cross multiply
    13,845.16x = 20,779.56 × 5,531.04
  4. Step 4: Simplify right side
    13,845.16x = 114,932,577.54
  5. Step 5: Solve for x
    x = 114,932,577.54/13,845.16
  6. Step 6: Final answer
    x = 8,301.28

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1.5x scale

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.