Home / 21,066.80-31,573.92-13,550.34

Finding the Fourth Proportional to 21,066.80, 31,573.92 and 13,550.34

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Solution

The fourth proportional to 21,066.80, 31,573.92 and 13,550.34 is: 20,308.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,066.80 : 31,573.92 = 13,550.34 : x
  2. Step 2: Convert to fraction form
    21,066.80/31,573.92 = 13,550.34/x
  3. Step 3: Cross multiply
    21,066.80x = 31,573.92 × 13,550.34
  4. Step 4: Simplify right side
    21,066.80x = 427,837,351.13
  5. Step 5: Solve for x
    x = 427,837,351.13/21,066.80
  6. Step 6: Final answer
    x = 20,308.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.