Home / 20,927.97-28,881.77-11,973.42

Finding the Fourth Proportional to 20,927.97, 28,881.77 and 11,973.42

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Solution

The fourth proportional to 20,927.97, 28,881.77 and 11,973.42 is: 16,523.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.97 : 28,881.77 = 11,973.42 : x
  2. Step 2: Convert to fraction form
    20,927.97/28,881.77 = 11,973.42/x
  3. Step 3: Cross multiply
    20,927.97x = 28,881.77 × 11,973.42
  4. Step 4: Simplify right side
    20,927.97x = 345,813,502.69
  5. Step 5: Solve for x
    x = 345,813,502.69/20,927.97
  6. Step 6: Final answer
    x = 16,523.99

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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.