Home / 20,116.76-30,147.80-7,630.07

Finding the Fourth Proportional to 20,116.76, 30,147.80 and 7,630.07

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Solution

The fourth proportional to 20,116.76, 30,147.80 and 7,630.07 is: 11,434.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116.76 : 30,147.80 = 7,630.07 : x
  2. Step 2: Convert to fraction form
    20,116.76/30,147.80 = 7,630.07/x
  3. Step 3: Cross multiply
    20,116.76x = 30,147.80 × 7,630.07
  4. Step 4: Simplify right side
    20,116.76x = 230,029,635.46
  5. Step 5: Solve for x
    x = 230,029,635.46/20,116.76
  6. Step 6: Final answer
    x = 11,434.73

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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.