Home / 13,155.81-19,711.44-7,950.75

Finding the Fourth Proportional to 13,155.81, 19,711.44 and 7,950.75

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Solution

The fourth proportional to 13,155.81, 19,711.44 and 7,950.75 is: 11,912.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.81 : 19,711.44 = 7,950.75 : x
  2. Step 2: Convert to fraction form
    13,155.81/19,711.44 = 7,950.75/x
  3. Step 3: Cross multiply
    13,155.81x = 19,711.44 × 7,950.75
  4. Step 4: Simplify right side
    13,155.81x = 156,720,731.58
  5. Step 5: Solve for x
    x = 156,720,731.58/13,155.81
  6. Step 6: Final answer
    x = 11,912.66

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1.5x scale

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.