Home / 12,890.00-19,334.88-7,661.24

Finding the Fourth Proportional to 12,890.00, 19,334.88 and 7,661.24

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Solution

The fourth proportional to 12,890.00, 19,334.88 and 7,661.24 is: 11,491.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.00 : 19,334.88 = 7,661.24 : x
  2. Step 2: Convert to fraction form
    12,890.00/19,334.88 = 7,661.24/x
  3. Step 3: Cross multiply
    12,890.00x = 19,334.88 × 7,661.24
  4. Step 4: Simplify right side
    12,890.00x = 148,129,059.38
  5. Step 5: Solve for x
    x = 148,129,059.38/12,890.00
  6. Step 6: Final answer
    x = 11,491.79

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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.