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Finding the Fourth Proportional to 28,895.60, 43,332.60 and 20,104.40

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Solution

The fourth proportional to 28,895.60, 43,332.60 and 20,104.40 is: 30,149.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,895.60 : 43,332.60 = 20,104.40 : x
  2. Step 2: Convert to fraction form
    28,895.60/43,332.60 = 20,104.40/x
  3. Step 3: Cross multiply
    28,895.60x = 43,332.60 × 20,104.40
  4. Step 4: Simplify right side
    28,895.60x = 871,175,923.44
  5. Step 5: Solve for x
    x = 871,175,923.44/28,895.60
  6. Step 6: Final answer
    x = 30,149.09

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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.