Home / 28,912.15-43,358.93-9,186.09

Finding the Fourth Proportional to 28,912.15, 43,358.93 and 9,186.09

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Solution

The fourth proportional to 28,912.15, 43,358.93 and 9,186.09 is: 13,776.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.15 : 43,358.93 = 9,186.09 : x
  2. Step 2: Convert to fraction form
    28,912.15/43,358.93 = 9,186.09/x
  3. Step 3: Cross multiply
    28,912.15x = 43,358.93 × 9,186.09
  4. Step 4: Simplify right side
    28,912.15x = 398,299,103.10
  5. Step 5: Solve for x
    x = 398,299,103.10/28,912.15
  6. Step 6: Final answer
    x = 13,776.19

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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.