Home / 20,186.46-30,279.87-7,038.81

Finding the Fourth Proportional to 20,186.46, 30,279.87 and 7,038.81

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Solution

The fourth proportional to 20,186.46, 30,279.87 and 7,038.81 is: 10,558.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,186.46 : 30,279.87 = 7,038.81 : x
  2. Step 2: Convert to fraction form
    20,186.46/30,279.87 = 7,038.81/x
  3. Step 3: Cross multiply
    20,186.46x = 30,279.87 × 7,038.81
  4. Step 4: Simplify right side
    20,186.46x = 213,134,251.75
  5. Step 5: Solve for x
    x = 213,134,251.75/20,186.46
  6. Step 6: Final answer
    x = 10,558.28

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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.