Home / 21,175.36-31,766.14-11,309.26

Finding the Fourth Proportional to 21,175.36, 31,766.14 and 11,309.26

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Solution

The fourth proportional to 21,175.36, 31,766.14 and 11,309.26 is: 16,965.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,175.36 : 31,766.14 = 11,309.26 : x
  2. Step 2: Convert to fraction form
    21,175.36/31,766.14 = 11,309.26/x
  3. Step 3: Cross multiply
    21,175.36x = 31,766.14 × 11,309.26
  4. Step 4: Simplify right side
    21,175.36x = 359,251,536.46
  5. Step 5: Solve for x
    x = 359,251,536.46/21,175.36
  6. Step 6: Final answer
    x = 16,965.55

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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.