Home / 19,777.43-27,291.47-11,279.90

Finding the Fourth Proportional to 19,777.43, 27,291.47 and 11,279.90

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Solution

The fourth proportional to 19,777.43, 27,291.47 and 11,279.90 is: 15,565.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,777.43 : 27,291.47 = 11,279.90 : x
  2. Step 2: Convert to fraction form
    19,777.43/27,291.47 = 11,279.90/x
  3. Step 3: Cross multiply
    19,777.43x = 27,291.47 × 11,279.90
  4. Step 4: Simplify right side
    19,777.43x = 307,845,148.88
  5. Step 5: Solve for x
    x = 307,845,148.88/19,777.43
  6. Step 6: Final answer
    x = 15,565.48

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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.