Home / 38,589.89-57,890.30-12,285.81

Finding the Fourth Proportional to 38,589.89, 57,890.30 and 12,285.81

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Solution

The fourth proportional to 38,589.89, 57,890.30 and 12,285.81 is: 18,430.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,589.89 : 57,890.30 = 12,285.81 : x
  2. Step 2: Convert to fraction form
    38,589.89/57,890.30 = 12,285.81/x
  3. Step 3: Cross multiply
    38,589.89x = 57,890.30 × 12,285.81
  4. Step 4: Simplify right side
    38,589.89x = 711,229,165.21
  5. Step 5: Solve for x
    x = 711,229,165.21/38,589.89
  6. Step 6: Final answer
    x = 18,430.46

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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.