Home / 20,495.85-30,742.56-7,167.92

Finding the Fourth Proportional to 20,495.85, 30,742.56 and 7,167.92

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Solution

The fourth proportional to 20,495.85, 30,742.56 and 7,167.92 is: 10,751.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,495.85 : 30,742.56 = 7,167.92 : x
  2. Step 2: Convert to fraction form
    20,495.85/30,742.56 = 7,167.92/x
  3. Step 3: Cross multiply
    20,495.85x = 30,742.56 × 7,167.92
  4. Step 4: Simplify right side
    20,495.85x = 220,360,056.96
  5. Step 5: Solve for x
    x = 220,360,056.96/20,495.85
  6. Step 6: Final answer
    x = 10,751.45

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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.