Home / 38,429.70-57,639.69-12,137.10

Finding the Fourth Proportional to 38,429.70, 57,639.69 and 12,137.10

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Solution

The fourth proportional to 38,429.70, 57,639.69 and 12,137.10 is: 18,204.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,429.70 : 57,639.69 = 12,137.10 : x
  2. Step 2: Convert to fraction form
    38,429.70/57,639.69 = 12,137.10/x
  3. Step 3: Cross multiply
    38,429.70x = 57,639.69 × 12,137.10
  4. Step 4: Simplify right side
    38,429.70x = 699,578,681.50
  5. Step 5: Solve for x
    x = 699,578,681.50/38,429.70
  6. Step 6: Final answer
    x = 18,204.12

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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.