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Finding the Fourth Proportional to 28,904.40, 43,327.80 and 13,294.80

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Solution

The fourth proportional to 28,904.40, 43,327.80 and 13,294.80 is: 19,928.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,904.40 : 43,327.80 = 13,294.80 : x
  2. Step 2: Convert to fraction form
    28,904.40/43,327.80 = 13,294.80/x
  3. Step 3: Cross multiply
    28,904.40x = 43,327.80 × 13,294.80
  4. Step 4: Simplify right side
    28,904.40x = 576,034,435.44
  5. Step 5: Solve for x
    x = 576,034,435.44/28,904.40
  6. Step 6: Final answer
    x = 19,928.95

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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.