Home / 34,389.81-51,599.30-18,789.21

Finding the Fourth Proportional to 34,389.81, 51,599.30 and 18,789.21

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Solution

The fourth proportional to 34,389.81, 51,599.30 and 18,789.21 is: 28,191.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,389.81 : 51,599.30 = 18,789.21 : x
  2. Step 2: Convert to fraction form
    34,389.81/51,599.30 = 18,789.21/x
  3. Step 3: Cross multiply
    34,389.81x = 51,599.30 × 18,789.21
  4. Step 4: Simplify right side
    34,389.81x = 969,509,989.61
  5. Step 5: Solve for x
    x = 969,509,989.61/34,389.81
  6. Step 6: Final answer
    x = 28,191.78

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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.