Home / 20,622.51-30,938.31-8,775.65

Finding the Fourth Proportional to 20,622.51, 30,938.31 and 8,775.65

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Solution

The fourth proportional to 20,622.51, 30,938.31 and 8,775.65 is: 13,165.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.51 : 30,938.31 = 8,775.65 : x
  2. Step 2: Convert to fraction form
    20,622.51/30,938.31 = 8,775.65/x
  3. Step 3: Cross multiply
    20,622.51x = 30,938.31 × 8,775.65
  4. Step 4: Simplify right side
    20,622.51x = 271,503,780.15
  5. Step 5: Solve for x
    x = 271,503,780.15/20,622.51
  6. Step 6: Final answer
    x = 13,165.41

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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.