Home / 20,516.31-30,779.64-5,725.22

Finding the Fourth Proportional to 20,516.31, 30,779.64 and 5,725.22

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Solution

The fourth proportional to 20,516.31, 30,779.64 and 5,725.22 is: 8,589.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,516.31 : 30,779.64 = 5,725.22 : x
  2. Step 2: Convert to fraction form
    20,516.31/30,779.64 = 5,725.22/x
  3. Step 3: Cross multiply
    20,516.31x = 30,779.64 × 5,725.22
  4. Step 4: Simplify right side
    20,516.31x = 176,220,056.62
  5. Step 5: Solve for x
    x = 176,220,056.62/20,516.31
  6. Step 6: Final answer
    x = 8,589.27

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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.