Home / 20,290.43-28,000.94-11,338.31

Finding the Fourth Proportional to 20,290.43, 28,000.94 and 11,338.31

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Solution

The fourth proportional to 20,290.43, 28,000.94 and 11,338.31 is: 15,646.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290.43 : 28,000.94 = 11,338.31 : x
  2. Step 2: Convert to fraction form
    20,290.43/28,000.94 = 11,338.31/x
  3. Step 3: Cross multiply
    20,290.43x = 28,000.94 × 11,338.31
  4. Step 4: Simplify right side
    20,290.43x = 317,483,141.32
  5. Step 5: Solve for x
    x = 317,483,141.32/20,290.43
  6. Step 6: Final answer
    x = 15,646.94

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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.