Home / 28,194.03-38,909.04-15,618.78

Finding the Fourth Proportional to 28,194.03, 38,909.04 and 15,618.78

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Solution

The fourth proportional to 28,194.03, 38,909.04 and 15,618.78 is: 21,554.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,194.03 : 38,909.04 = 15,618.78 : x
  2. Step 2: Convert to fraction form
    28,194.03/38,909.04 = 15,618.78/x
  3. Step 3: Cross multiply
    28,194.03x = 38,909.04 × 15,618.78
  4. Step 4: Simplify right side
    28,194.03x = 607,711,735.77
  5. Step 5: Solve for x
    x = 607,711,735.77/28,194.03
  6. Step 6: Final answer
    x = 21,554.62

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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.