Home / 28,742.31-43,061.58-12,072.51

Finding the Fourth Proportional to 28,742.31, 43,061.58 and 12,072.51

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Solution

The fourth proportional to 28,742.31, 43,061.58 and 12,072.51 is: 18,086.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,742.31 : 43,061.58 = 12,072.51 : x
  2. Step 2: Convert to fraction form
    28,742.31/43,061.58 = 12,072.51/x
  3. Step 3: Cross multiply
    28,742.31x = 43,061.58 × 12,072.51
  4. Step 4: Simplify right side
    28,742.31x = 519,861,355.17
  5. Step 5: Solve for x
    x = 519,861,355.17/28,742.31
  6. Step 6: Final answer
    x = 18,086.97

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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.