Home / 28,926.90-43,394.40-12,286.80

Finding the Fourth Proportional to 28,926.90, 43,394.40 and 12,286.80

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Solution

The fourth proportional to 28,926.90, 43,394.40 and 12,286.80 is: 18,431.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,926.90 : 43,394.40 = 12,286.80 : x
  2. Step 2: Convert to fraction form
    28,926.90/43,394.40 = 12,286.80/x
  3. Step 3: Cross multiply
    28,926.90x = 43,394.40 × 12,286.80
  4. Step 4: Simplify right side
    28,926.90x = 533,178,313.92
  5. Step 5: Solve for x
    x = 533,178,313.92/28,926.90
  6. Step 6: Final answer
    x = 18,431.92

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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.