Home / 28,777.75-43,186.20-10,309.75

Finding the Fourth Proportional to 28,777.75, 43,186.20 and 10,309.75

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Solution

The fourth proportional to 28,777.75, 43,186.20 and 10,309.75 is: 15,471.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,777.75 : 43,186.20 = 10,309.75 : x
  2. Step 2: Convert to fraction form
    28,777.75/43,186.20 = 10,309.75/x
  3. Step 3: Cross multiply
    28,777.75x = 43,186.20 × 10,309.75
  4. Step 4: Simplify right side
    28,777.75x = 445,238,925.45
  5. Step 5: Solve for x
    x = 445,238,925.45/28,777.75
  6. Step 6: Final answer
    x = 15,471.64

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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.