Home / 20,779.24-31,168.86-5,196.86

Finding the Fourth Proportional to 20,779.24, 31,168.86 and 5,196.86

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Solution

The fourth proportional to 20,779.24, 31,168.86 and 5,196.86 is: 7,795.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.24 : 31,168.86 = 5,196.86 : x
  2. Step 2: Convert to fraction form
    20,779.24/31,168.86 = 5,196.86/x
  3. Step 3: Cross multiply
    20,779.24x = 31,168.86 × 5,196.86
  4. Step 4: Simplify right side
    20,779.24x = 161,980,201.78
  5. Step 5: Solve for x
    x = 161,980,201.78/20,779.24
  6. Step 6: Final answer
    x = 7,795.29

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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.