Home / 20,322.13-28,045.62-11,369.09

Finding the Fourth Proportional to 20,322.13, 28,045.62 and 11,369.09

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Solution

The fourth proportional to 20,322.13, 28,045.62 and 11,369.09 is: 15,689.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.13 : 28,045.62 = 11,369.09 : x
  2. Step 2: Convert to fraction form
    20,322.13/28,045.62 = 11,369.09/x
  3. Step 3: Cross multiply
    20,322.13x = 28,045.62 × 11,369.09
  4. Step 4: Simplify right side
    20,322.13x = 318,853,343.22
  5. Step 5: Solve for x
    x = 318,853,343.22/20,322.13
  6. Step 6: Final answer
    x = 15,689.96

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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.