Home / 20,126.16-30,190.86-7,652.16

Finding the Fourth Proportional to 20,126.16, 30,190.86 and 7,652.16

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Solution

The fourth proportional to 20,126.16, 30,190.86 and 7,652.16 is: 11,478.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.16 : 30,190.86 = 7,652.16 : x
  2. Step 2: Convert to fraction form
    20,126.16/30,190.86 = 7,652.16/x
  3. Step 3: Cross multiply
    20,126.16x = 30,190.86 × 7,652.16
  4. Step 4: Simplify right side
    20,126.16x = 231,025,291.26
  5. Step 5: Solve for x
    x = 231,025,291.26/20,126.16
  6. Step 6: Final answer
    x = 11,478.86

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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.