Home / 19,765.48-27,278.70-11,151.88

Finding the Fourth Proportional to 19,765.48, 27,278.70 and 11,151.88

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Solution

The fourth proportional to 19,765.48, 27,278.70 and 11,151.88 is: 15,390.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,765.48 : 27,278.70 = 11,151.88 : x
  2. Step 2: Convert to fraction form
    19,765.48/27,278.70 = 11,151.88/x
  3. Step 3: Cross multiply
    19,765.48x = 27,278.70 × 11,151.88
  4. Step 4: Simplify right side
    19,765.48x = 304,208,788.96
  5. Step 5: Solve for x
    x = 304,208,788.96/19,765.48
  6. Step 6: Final answer
    x = 15,390.91

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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.