Home / 20,519.76-30,755.34-9,417.09

Finding the Fourth Proportional to 20,519.76, 30,755.34 and 9,417.09

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Solution

The fourth proportional to 20,519.76, 30,755.34 and 9,417.09 is: 14,114.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,519.76 : 30,755.34 = 9,417.09 : x
  2. Step 2: Convert to fraction form
    20,519.76/30,755.34 = 9,417.09/x
  3. Step 3: Cross multiply
    20,519.76x = 30,755.34 × 9,417.09
  4. Step 4: Simplify right side
    20,519.76x = 289,625,804.76
  5. Step 5: Solve for x
    x = 289,625,804.76/20,519.76
  6. Step 6: Final answer
    x = 14,114.48

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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.