Home / 20,696.58-28,561.32-11,265.12

Finding the Fourth Proportional to 20,696.58, 28,561.32 and 11,265.12

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Solution

The fourth proportional to 20,696.58, 28,561.32 and 11,265.12 is: 15,545.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.58 : 28,561.32 = 11,265.12 : x
  2. Step 2: Convert to fraction form
    20,696.58/28,561.32 = 11,265.12/x
  3. Step 3: Cross multiply
    20,696.58x = 28,561.32 × 11,265.12
  4. Step 4: Simplify right side
    20,696.58x = 321,746,697.16
  5. Step 5: Solve for x
    x = 321,746,697.16/20,696.58
  6. Step 6: Final answer
    x = 15,545.89

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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.