Home / 20,505.12-28,296.44-11,552.43

Finding the Fourth Proportional to 20,505.12, 28,296.44 and 11,552.43

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Solution

The fourth proportional to 20,505.12, 28,296.44 and 11,552.43 is: 15,942.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505.12 : 28,296.44 = 11,552.43 : x
  2. Step 2: Convert to fraction form
    20,505.12/28,296.44 = 11,552.43/x
  3. Step 3: Cross multiply
    20,505.12x = 28,296.44 × 11,552.43
  4. Step 4: Simplify right side
    20,505.12x = 326,892,642.35
  5. Step 5: Solve for x
    x = 326,892,642.35/20,505.12
  6. Step 6: Final answer
    x = 15,942.00

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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.