Home / 19,775.72-27,290.85-11,278.82

Finding the Fourth Proportional to 19,775.72, 27,290.85 and 11,278.82

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Solution

The fourth proportional to 19,775.72, 27,290.85 and 11,278.82 is: 15,564.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,775.72 : 27,290.85 = 11,278.82 : x
  2. Step 2: Convert to fraction form
    19,775.72/27,290.85 = 11,278.82/x
  3. Step 3: Cross multiply
    19,775.72x = 27,290.85 × 11,278.82
  4. Step 4: Simplify right side
    19,775.72x = 307,808,584.80
  5. Step 5: Solve for x
    x = 307,808,584.80/19,775.72
  6. Step 6: Final answer
    x = 15,564.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.