Home / 20,742.67-31,109.68-6,704.02

Finding the Fourth Proportional to 20,742.67, 31,109.68 and 6,704.02

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Solution

The fourth proportional to 20,742.67, 31,109.68 and 6,704.02 is: 10,054.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.67 : 31,109.68 = 6,704.02 : x
  2. Step 2: Convert to fraction form
    20,742.67/31,109.68 = 6,704.02/x
  3. Step 3: Cross multiply
    20,742.67x = 31,109.68 × 6,704.02
  4. Step 4: Simplify right side
    20,742.67x = 208,559,916.91
  5. Step 5: Solve for x
    x = 208,559,916.91/20,742.67
  6. Step 6: Final answer
    x = 10,054.63

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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.