Home / 20,295.29-28,008.78-11,343.44

Finding the Fourth Proportional to 20,295.29, 28,008.78 and 11,343.44

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Solution

The fourth proportional to 20,295.29, 28,008.78 and 11,343.44 is: 15,654.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,295.29 : 28,008.78 = 11,343.44 : x
  2. Step 2: Convert to fraction form
    20,295.29/28,008.78 = 11,343.44/x
  3. Step 3: Cross multiply
    20,295.29x = 28,008.78 × 11,343.44
  4. Step 4: Simplify right side
    20,295.29x = 317,715,915.40
  5. Step 5: Solve for x
    x = 317,715,915.40/20,295.29
  6. Step 6: Final answer
    x = 15,654.66

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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.