Home / 13,149.99-19,675.57-7,865.55

Finding the Fourth Proportional to 13,149.99, 19,675.57 and 7,865.55

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Solution

The fourth proportional to 13,149.99, 19,675.57 and 7,865.55 is: 11,768.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.99 : 19,675.57 = 7,865.55 : x
  2. Step 2: Convert to fraction form
    13,149.99/19,675.57 = 7,865.55/x
  3. Step 3: Cross multiply
    13,149.99x = 19,675.57 × 7,865.55
  4. Step 4: Simplify right side
    13,149.99x = 154,759,179.61
  5. Step 5: Solve for x
    x = 154,759,179.61/13,149.99
  6. Step 6: Final answer
    x = 11,768.77

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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.