Home / 28,912.95-43,370.64-9,191.07

Finding the Fourth Proportional to 28,912.95, 43,370.64 and 9,191.07

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Solution

The fourth proportional to 28,912.95, 43,370.64 and 9,191.07 is: 13,786.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.95 : 43,370.64 = 9,191.07 : x
  2. Step 2: Convert to fraction form
    28,912.95/43,370.64 = 9,191.07/x
  3. Step 3: Cross multiply
    28,912.95x = 43,370.64 × 9,191.07
  4. Step 4: Simplify right side
    28,912.95x = 398,622,588.18
  5. Step 5: Solve for x
    x = 398,622,588.18/28,912.95
  6. Step 6: Final answer
    x = 13,786.99

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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.