Home / 20,214.72-30,317.22-8,521.56

Finding the Fourth Proportional to 20,214.72, 30,317.22 and 8,521.56

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Solution

The fourth proportional to 20,214.72, 30,317.22 and 8,521.56 is: 12,780.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,214.72 : 30,317.22 = 8,521.56 : x
  2. Step 2: Convert to fraction form
    20,214.72/30,317.22 = 8,521.56/x
  3. Step 3: Cross multiply
    20,214.72x = 30,317.22 × 8,521.56
  4. Step 4: Simplify right side
    20,214.72x = 258,350,009.26
  5. Step 5: Solve for x
    x = 258,350,009.26/20,214.72
  6. Step 6: Final answer
    x = 12,780.29

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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.