Home / 20,341.56-30,512.40-7,186.80

Finding the Fourth Proportional to 20,341.56, 30,512.40 and 7,186.80

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Solution

The fourth proportional to 20,341.56, 30,512.40 and 7,186.80 is: 10,780.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,341.56 : 30,512.40 = 7,186.80 : x
  2. Step 2: Convert to fraction form
    20,341.56/30,512.40 = 7,186.80/x
  3. Step 3: Cross multiply
    20,341.56x = 30,512.40 × 7,186.80
  4. Step 4: Simplify right side
    20,341.56x = 219,286,516.32
  5. Step 5: Solve for x
    x = 219,286,516.32/20,341.56
  6. Step 6: Final answer
    x = 10,780.22

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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.