Home / 20,950.97-28,918.47-12,459.07

Finding the Fourth Proportional to 20,950.97, 28,918.47 and 12,459.07

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Solution

The fourth proportional to 20,950.97, 28,918.47 and 12,459.07 is: 17,197.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,950.97 : 28,918.47 = 12,459.07 : x
  2. Step 2: Convert to fraction form
    20,950.97/28,918.47 = 12,459.07/x
  3. Step 3: Cross multiply
    20,950.97x = 28,918.47 × 12,459.07
  4. Step 4: Simplify right side
    20,950.97x = 360,297,092.14
  5. Step 5: Solve for x
    x = 360,297,092.14/20,950.97
  6. Step 6: Final answer
    x = 17,197.16

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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.