Home / 20,934.41-28,888.97-11,981.34

Finding the Fourth Proportional to 20,934.41, 28,888.97 and 11,981.34

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Solution

The fourth proportional to 20,934.41, 28,888.97 and 11,981.34 is: 16,533.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.41 : 28,888.97 = 11,981.34 : x
  2. Step 2: Convert to fraction form
    20,934.41/28,888.97 = 11,981.34/x
  3. Step 3: Cross multiply
    20,934.41x = 28,888.97 × 11,981.34
  4. Step 4: Simplify right side
    20,934.41x = 346,128,511.91
  5. Step 5: Solve for x
    x = 346,128,511.91/20,934.41
  6. Step 6: Final answer
    x = 16,533.96

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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.