Home / 20,729.13-28,606.23-11,297.76

Finding the Fourth Proportional to 20,729.13, 28,606.23 and 11,297.76

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Solution

The fourth proportional to 20,729.13, 28,606.23 and 11,297.76 is: 15,590.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.13 : 28,606.23 = 11,297.76 : x
  2. Step 2: Convert to fraction form
    20,729.13/28,606.23 = 11,297.76/x
  3. Step 3: Cross multiply
    20,729.13x = 28,606.23 × 11,297.76
  4. Step 4: Simplify right side
    20,729.13x = 323,186,321.04
  5. Step 5: Solve for x
    x = 323,186,321.04/20,729.13
  6. Step 6: Final answer
    x = 15,590.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.