Home / 20,730.47-31,104.81-7,584.80

Finding the Fourth Proportional to 20,730.47, 31,104.81 and 7,584.80

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Solution

The fourth proportional to 20,730.47, 31,104.81 and 7,584.80 is: 11,380.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.47 : 31,104.81 = 7,584.80 : x
  2. Step 2: Convert to fraction form
    20,730.47/31,104.81 = 7,584.80/x
  3. Step 3: Cross multiply
    20,730.47x = 31,104.81 × 7,584.80
  4. Step 4: Simplify right side
    20,730.47x = 235,923,607.36
  5. Step 5: Solve for x
    x = 235,923,607.36/20,730.47
  6. Step 6: Final answer
    x = 11,380.53

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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.