Home / 20,348.76-28,081.35-11,396.40

Finding the Fourth Proportional to 20,348.76, 28,081.35 and 11,396.40

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Solution

The fourth proportional to 20,348.76, 28,081.35 and 11,396.40 is: 15,727.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,348.76 : 28,081.35 = 11,396.40 : x
  2. Step 2: Convert to fraction form
    20,348.76/28,081.35 = 11,396.40/x
  3. Step 3: Cross multiply
    20,348.76x = 28,081.35 × 11,396.40
  4. Step 4: Simplify right side
    20,348.76x = 320,026,297.14
  5. Step 5: Solve for x
    x = 320,026,297.14/20,348.76
  6. Step 6: Final answer
    x = 15,727.07

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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.