Home / 20,934.54-28,890.13-11,503.10

Finding the Fourth Proportional to 20,934.54, 28,890.13 and 11,503.10

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Solution

The fourth proportional to 20,934.54, 28,890.13 and 11,503.10 is: 15,874.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.54 : 28,890.13 = 11,503.10 : x
  2. Step 2: Convert to fraction form
    20,934.54/28,890.13 = 11,503.10/x
  3. Step 3: Cross multiply
    20,934.54x = 28,890.13 × 11,503.10
  4. Step 4: Simplify right side
    20,934.54x = 332,326,054.40
  5. Step 5: Solve for x
    x = 332,326,054.40/20,934.54
  6. Step 6: Final answer
    x = 15,874.53

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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.