Home / 14,107.38-19,465.47-8,139.30

Finding the Fourth Proportional to 14,107.38, 19,465.47 and 8,139.30

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Solution

The fourth proportional to 14,107.38, 19,465.47 and 8,139.30 is: 11,230.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,107.38 : 19,465.47 = 8,139.30 : x
  2. Step 2: Convert to fraction form
    14,107.38/19,465.47 = 8,139.30/x
  3. Step 3: Cross multiply
    14,107.38x = 19,465.47 × 8,139.30
  4. Step 4: Simplify right side
    14,107.38x = 158,435,299.97
  5. Step 5: Solve for x
    x = 158,435,299.97/14,107.38
  6. Step 6: Final answer
    x = 11,230.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.