Home / 20,341.42-30,488.70-7,855.94

Finding the Fourth Proportional to 20,341.42, 30,488.70 and 7,855.94

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Solution

The fourth proportional to 20,341.42, 30,488.70 and 7,855.94 is: 11,774.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,341.42 : 30,488.70 = 7,855.94 : x
  2. Step 2: Convert to fraction form
    20,341.42/30,488.70 = 7,855.94/x
  3. Step 3: Cross multiply
    20,341.42x = 30,488.70 × 7,855.94
  4. Step 4: Simplify right side
    20,341.42x = 239,517,397.88
  5. Step 5: Solve for x
    x = 239,517,397.88/20,341.42
  6. Step 6: Final answer
    x = 11,774.86

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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.