Home / 20,867.58-31,301.10-5,072.76

Finding the Fourth Proportional to 20,867.58, 31,301.10 and 5,072.76

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Solution

The fourth proportional to 20,867.58, 31,301.10 and 5,072.76 is: 7,609.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.58 : 31,301.10 = 5,072.76 : x
  2. Step 2: Convert to fraction form
    20,867.58/31,301.10 = 5,072.76/x
  3. Step 3: Cross multiply
    20,867.58x = 31,301.10 × 5,072.76
  4. Step 4: Simplify right side
    20,867.58x = 158,782,968.04
  5. Step 5: Solve for x
    x = 158,782,968.04/20,867.58
  6. Step 6: Final answer
    x = 7,609.07

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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.