Home / 28,809.80-43,214.70-19,478.60

Finding the Fourth Proportional to 28,809.80, 43,214.70 and 19,478.60

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Solution

The fourth proportional to 28,809.80, 43,214.70 and 19,478.60 is: 29,217.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,809.80 : 43,214.70 = 19,478.60 : x
  2. Step 2: Convert to fraction form
    28,809.80/43,214.70 = 19,478.60/x
  3. Step 3: Cross multiply
    28,809.80x = 43,214.70 × 19,478.60
  4. Step 4: Simplify right side
    28,809.80x = 841,761,855.42
  5. Step 5: Solve for x
    x = 841,761,855.42/28,809.80
  6. Step 6: Final answer
    x = 29,217.90

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.