Home / 28,890.40-43,336.84-9,169.76

Finding the Fourth Proportional to 28,890.40, 43,336.84 and 9,169.76

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Solution

The fourth proportional to 28,890.40, 43,336.84 and 9,169.76 is: 13,755.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,890.40 : 43,336.84 = 9,169.76 : x
  2. Step 2: Convert to fraction form
    28,890.40/43,336.84 = 9,169.76/x
  3. Step 3: Cross multiply
    28,890.40x = 43,336.84 × 9,169.76
  4. Step 4: Simplify right side
    28,890.40x = 397,388,421.96
  5. Step 5: Solve for x
    x = 397,388,421.96/28,890.40
  6. Step 6: Final answer
    x = 13,755.03

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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.