Home / 19,029.72-28,552.79-7,938.60

Finding the Fourth Proportional to 19,029.72, 28,552.79 and 7,938.60

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Solution

The fourth proportional to 19,029.72, 28,552.79 and 7,938.60 is: 11,911.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,029.72 : 28,552.79 = 7,938.60 : x
  2. Step 2: Convert to fraction form
    19,029.72/28,552.79 = 7,938.60/x
  3. Step 3: Cross multiply
    19,029.72x = 28,552.79 × 7,938.60
  4. Step 4: Simplify right side
    19,029.72x = 226,669,178.69
  5. Step 5: Solve for x
    x = 226,669,178.69/19,029.72
  6. Step 6: Final answer
    x = 11,911.32

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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.