Home / 20,308.68-28,025.82-11,356.20

Finding the Fourth Proportional to 20,308.68, 28,025.82 and 11,356.20

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Solution

The fourth proportional to 20,308.68, 28,025.82 and 11,356.20 is: 15,671.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308.68 : 28,025.82 = 11,356.20 : x
  2. Step 2: Convert to fraction form
    20,308.68/28,025.82 = 11,356.20/x
  3. Step 3: Cross multiply
    20,308.68x = 28,025.82 × 11,356.20
  4. Step 4: Simplify right side
    20,308.68x = 318,266,817.08
  5. Step 5: Solve for x
    x = 318,266,817.08/20,308.68
  6. Step 6: Final answer
    x = 15,671.47

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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.