Home / 28,913.21-43,369.82-9,191.77

Finding the Fourth Proportional to 28,913.21, 43,369.82 and 9,191.77

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Solution

The fourth proportional to 28,913.21, 43,369.82 and 9,191.77 is: 13,787.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,913.21 : 43,369.82 = 9,191.77 : x
  2. Step 2: Convert to fraction form
    28,913.21/43,369.82 = 9,191.77/x
  3. Step 3: Cross multiply
    28,913.21x = 43,369.82 × 9,191.77
  4. Step 4: Simplify right side
    28,913.21x = 398,645,410.38
  5. Step 5: Solve for x
    x = 398,645,410.38/28,913.21
  6. Step 6: Final answer
    x = 13,787.66

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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.