Home / 12,215.93-18,320.23-5,195.89

Finding the Fourth Proportional to 12,215.93, 18,320.23 and 5,195.89

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Solution

The fourth proportional to 12,215.93, 18,320.23 and 5,195.89 is: 7,792.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.93 : 18,320.23 = 5,195.89 : x
  2. Step 2: Convert to fraction form
    12,215.93/18,320.23 = 5,195.89/x
  3. Step 3: Cross multiply
    12,215.93x = 18,320.23 × 5,195.89
  4. Step 4: Simplify right side
    12,215.93x = 95,189,899.85
  5. Step 5: Solve for x
    x = 95,189,899.85/12,215.93
  6. Step 6: Final answer
    x = 7,792.28

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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.