Home / 34,459.20-47,553.75-20,128.86

Finding the Fourth Proportional to 34,459.20, 47,553.75 and 20,128.86

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Solution

The fourth proportional to 34,459.20, 47,553.75 and 20,128.86 is: 27,777.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,459.20 : 47,553.75 = 20,128.86 : x
  2. Step 2: Convert to fraction form
    34,459.20/47,553.75 = 20,128.86/x
  3. Step 3: Cross multiply
    34,459.20x = 47,553.75 × 20,128.86
  4. Step 4: Simplify right side
    34,459.20x = 957,202,776.23
  5. Step 5: Solve for x
    x = 957,202,776.23/34,459.20
  6. Step 6: Final answer
    x = 27,777.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.