Home / 20,396.45-30,595.81-5,605.04

Finding the Fourth Proportional to 20,396.45, 30,595.81 and 5,605.04

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Solution

The fourth proportional to 20,396.45, 30,595.81 and 5,605.04 is: 8,407.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,396.45 : 30,595.81 = 5,605.04 : x
  2. Step 2: Convert to fraction form
    20,396.45/30,595.81 = 5,605.04/x
  3. Step 3: Cross multiply
    20,396.45x = 30,595.81 × 5,605.04
  4. Step 4: Simplify right side
    20,396.45x = 171,490,738.88
  5. Step 5: Solve for x
    x = 171,490,738.88/20,396.45
  6. Step 6: Final answer
    x = 8,407.87

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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.