Home / 20,934.19-28,888.14-11,503.09

Finding the Fourth Proportional to 20,934.19, 28,888.14 and 11,503.09

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Solution

The fourth proportional to 20,934.19, 28,888.14 and 11,503.09 is: 15,873.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.19 : 28,888.14 = 11,503.09 : x
  2. Step 2: Convert to fraction form
    20,934.19/28,888.14 = 11,503.09/x
  3. Step 3: Cross multiply
    20,934.19x = 28,888.14 × 11,503.09
  4. Step 4: Simplify right side
    20,934.19x = 332,302,874.35
  5. Step 5: Solve for x
    x = 332,302,874.35/20,934.19
  6. Step 6: Final answer
    x = 15,873.69

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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.