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Finding the Fourth Proportional to 28,793, 43,119.84 and 13,965.20

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Solution

The fourth proportional to 28,793, 43,119.84 and 13,965.20 is: 20,914.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,793 : 43,119.84 = 13,965.20 : x
  2. Step 2: Convert to fraction form
    28,793/43,119.84 = 13,965.20/x
  3. Step 3: Cross multiply
    28,793x = 43,119.84 × 13,965.20
  4. Step 4: Simplify right side
    28,793x = 602,177,189.57
  5. Step 5: Solve for x
    x = 602,177,189.57/28,793
  6. Step 6: Final answer
    x = 20,914.01

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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.