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Finding the Fourth Proportional to 38,751.89, 58,133.30 and 12,447.81

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Solution

The fourth proportional to 38,751.89, 58,133.30 and 12,447.81 is: 18,673.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,751.89 : 58,133.30 = 12,447.81 : x
  2. Step 2: Convert to fraction form
    38,751.89/58,133.30 = 12,447.81/x
  3. Step 3: Cross multiply
    38,751.89x = 58,133.30 × 12,447.81
  4. Step 4: Simplify right side
    38,751.89x = 723,632,210.83
  5. Step 5: Solve for x
    x = 723,632,210.83/38,751.89
  6. Step 6: Final answer
    x = 18,673.47

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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.