Home / 28,912.65-43,359.68-9,186.59

Finding the Fourth Proportional to 28,912.65, 43,359.68 and 9,186.59

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Solution

The fourth proportional to 28,912.65, 43,359.68 and 9,186.59 is: 13,776.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.65 : 43,359.68 = 9,186.59 : x
  2. Step 2: Convert to fraction form
    28,912.65/43,359.68 = 9,186.59/x
  3. Step 3: Cross multiply
    28,912.65x = 43,359.68 × 9,186.59
  4. Step 4: Simplify right side
    28,912.65x = 398,327,602.69
  5. Step 5: Solve for x
    x = 398,327,602.69/28,912.65
  6. Step 6: Final answer
    x = 13,776.93

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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.