Home / 20,266.76-30,379.34-9,721.38

Finding the Fourth Proportional to 20,266.76, 30,379.34 and 9,721.38

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Solution

The fourth proportional to 20,266.76, 30,379.34 and 9,721.38 is: 14,572.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,266.76 : 30,379.34 = 9,721.38 : x
  2. Step 2: Convert to fraction form
    20,266.76/30,379.34 = 9,721.38/x
  3. Step 3: Cross multiply
    20,266.76x = 30,379.34 × 9,721.38
  4. Step 4: Simplify right side
    20,266.76x = 295,329,108.29
  5. Step 5: Solve for x
    x = 295,329,108.29/20,266.76
  6. Step 6: Final answer
    x = 14,572.09

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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.