Home / 20,487.28-30,712.60-8,004.37

Finding the Fourth Proportional to 20,487.28, 30,712.60 and 8,004.37

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Solution

The fourth proportional to 20,487.28, 30,712.60 and 8,004.37 is: 11,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487.28 : 30,712.60 = 8,004.37 : x
  2. Step 2: Convert to fraction form
    20,487.28/30,712.60 = 8,004.37/x
  3. Step 3: Cross multiply
    20,487.28x = 30,712.60 × 8,004.37
  4. Step 4: Simplify right side
    20,487.28x = 245,835,014.06
  5. Step 5: Solve for x
    x = 245,835,014.06/20,487.28
  6. Step 6: Final answer
    x = 11,999.40

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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.