Home / 20,160.90-30,222.72-10,807.43

Finding the Fourth Proportional to 20,160.90, 30,222.72 and 10,807.43

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Solution

The fourth proportional to 20,160.90, 30,222.72 and 10,807.43 is: 16,201.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.90 : 30,222.72 = 10,807.43 : x
  2. Step 2: Convert to fraction form
    20,160.90/30,222.72 = 10,807.43/x
  3. Step 3: Cross multiply
    20,160.90x = 30,222.72 × 10,807.43
  4. Step 4: Simplify right side
    20,160.90x = 326,629,779.70
  5. Step 5: Solve for x
    x = 326,629,779.70/20,160.90
  6. Step 6: Final answer
    x = 16,201.15

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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.