Home / 20,266.71-30,403.11-7,116.77

Finding the Fourth Proportional to 20,266.71, 30,403.11 and 7,116.77

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Solution

The fourth proportional to 20,266.71, 30,403.11 and 7,116.77 is: 10,676.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,266.71 : 30,403.11 = 7,116.77 : x
  2. Step 2: Convert to fraction form
    20,266.71/30,403.11 = 7,116.77/x
  3. Step 3: Cross multiply
    20,266.71x = 30,403.11 × 7,116.77
  4. Step 4: Simplify right side
    20,266.71x = 216,371,789.14
  5. Step 5: Solve for x
    x = 216,371,789.14/20,266.71
  6. Step 6: Final answer
    x = 10,676.22

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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.