Home / 20,730.90-31,104.45-7,584.30

Finding the Fourth Proportional to 20,730.90, 31,104.45 and 7,584.30

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Solution

The fourth proportional to 20,730.90, 31,104.45 and 7,584.30 is: 11,379.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.90 : 31,104.45 = 7,584.30 : x
  2. Step 2: Convert to fraction form
    20,730.90/31,104.45 = 7,584.30/x
  3. Step 3: Cross multiply
    20,730.90x = 31,104.45 × 7,584.30
  4. Step 4: Simplify right side
    20,730.90x = 235,905,480.14
  5. Step 5: Solve for x
    x = 235,905,480.14/20,730.90
  6. Step 6: Final answer
    x = 11,379.41

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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.