Home / 20,259.42-30,379.69-6,215.83

Finding the Fourth Proportional to 20,259.42, 30,379.69 and 6,215.83

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Solution

The fourth proportional to 20,259.42, 30,379.69 and 6,215.83 is: 9,320.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,259.42 : 30,379.69 = 6,215.83 : x
  2. Step 2: Convert to fraction form
    20,259.42/30,379.69 = 6,215.83/x
  3. Step 3: Cross multiply
    20,259.42x = 30,379.69 × 6,215.83
  4. Step 4: Simplify right side
    20,259.42x = 188,834,988.49
  5. Step 5: Solve for x
    x = 188,834,988.49/20,259.42
  6. Step 6: Final answer
    x = 9,320.85

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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.