Home / 20,531.91-28,338.44-12,973.44

Finding the Fourth Proportional to 20,531.91, 28,338.44 and 12,973.44

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Solution

The fourth proportional to 20,531.91, 28,338.44 and 12,973.44 is: 17,906.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.91 : 28,338.44 = 12,973.44 : x
  2. Step 2: Convert to fraction form
    20,531.91/28,338.44 = 12,973.44/x
  3. Step 3: Cross multiply
    20,531.91x = 28,338.44 × 12,973.44
  4. Step 4: Simplify right side
    20,531.91x = 367,646,986.17
  5. Step 5: Solve for x
    x = 367,646,986.17/20,531.91
  6. Step 6: Final answer
    x = 17,906.13

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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.