Home / 20,402.85-30,604.62-5,611.65

Finding the Fourth Proportional to 20,402.85, 30,604.62 and 5,611.65

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Solution

The fourth proportional to 20,402.85, 30,604.62 and 5,611.65 is: 8,417.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402.85 : 30,604.62 = 5,611.65 : x
  2. Step 2: Convert to fraction form
    20,402.85/30,604.62 = 5,611.65/x
  3. Step 3: Cross multiply
    20,402.85x = 30,604.62 × 5,611.65
  4. Step 4: Simplify right side
    20,402.85x = 171,742,415.82
  5. Step 5: Solve for x
    x = 171,742,415.82/20,402.85
  6. Step 6: Final answer
    x = 8,417.57

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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.