Home / 12,756.78-19,149.75-7,573.59

Finding the Fourth Proportional to 12,756.78, 19,149.75 and 7,573.59

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Solution

The fourth proportional to 12,756.78, 19,149.75 and 7,573.59 is: 11,369.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,756.78 : 19,149.75 = 7,573.59 : x
  2. Step 2: Convert to fraction form
    12,756.78/19,149.75 = 7,573.59/x
  3. Step 3: Cross multiply
    12,756.78x = 19,149.75 × 7,573.59
  4. Step 4: Simplify right side
    12,756.78x = 145,032,355.10
  5. Step 5: Solve for x
    x = 145,032,355.10/12,756.78
  6. Step 6: Final answer
    x = 11,369.04

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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.