Home / 21,066.38-31,604.44-11,215.16

Finding the Fourth Proportional to 21,066.38, 31,604.44 and 11,215.16

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Solution

The fourth proportional to 21,066.38, 31,604.44 and 11,215.16 is: 16,825.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,066.38 : 31,604.44 = 11,215.16 : x
  2. Step 2: Convert to fraction form
    21,066.38/31,604.44 = 11,215.16/x
  3. Step 3: Cross multiply
    21,066.38x = 31,604.44 × 11,215.16
  4. Step 4: Simplify right side
    21,066.38x = 354,448,851.31
  5. Step 5: Solve for x
    x = 354,448,851.31/21,066.38
  6. Step 6: Final answer
    x = 16,825.33

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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.