Home / 20,149.21-30,215.98-6,818.63

Finding the Fourth Proportional to 20,149.21, 30,215.98 and 6,818.63

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Solution

The fourth proportional to 20,149.21, 30,215.98 and 6,818.63 is: 10,225.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149.21 : 30,215.98 = 6,818.63 : x
  2. Step 2: Convert to fraction form
    20,149.21/30,215.98 = 6,818.63/x
  3. Step 3: Cross multiply
    20,149.21x = 30,215.98 × 6,818.63
  4. Step 4: Simplify right side
    20,149.21x = 206,031,587.71
  5. Step 5: Solve for x
    x = 206,031,587.71/20,149.21
  6. Step 6: Final answer
    x = 10,225.29

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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.